US Patent Class 162
PAPER MAKING AND FIBER LIBERATION




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  PROCESSES OF CHEMICAL LIBERATION, RECOVERY OR PURIFICATION OF NATURAL CELLULOSE OR FIBROUS MATERIAL
2  DF  .~ Animal fibers
3  DF  .~ Mineral fibers
4  DF  .~ Waste paper or textile waste
5  DF  .~.~ With organic agent
6  DF  .~.~ With chlorine, chlorine compounds, oxygen, ozone, or per-compounds
7  DF  .~.~ With sulfur or sulfur compound
8  DF  .~.~ With alkali metal, alkaline earth metal, or ammonium compound
9  DF  .~ With chemical or physical modification of liberated fiber
10  DF  .~ With non-fiber material added to product
11  DF  .~.~ Fiber supplied constituent
12  DF  .~.~ Added to web or article
13  DF  .~ With formation of web or article
14  DF  .~ Including recovery of organic by-product
15  DF  .~.~ From digester relief gases
16  DF  .~.~ From waste liquor
17  DF  .~ Continuous chemical treatment or continuous charging or discharging
18  DF  .~.~ With compression, squeezing or compacting of fibrous material during charging
19  DF  .~.~ Plural diverse stage treatment
20  DF  .~ With decortication or mechanical preparation of textile fibers
21  DF  .~ Defibration by projection or explosion
22  DF  .~.~ With chemical other than water or steam
23  DF  .~ Mechanical defibration in the presence of heated gas or gas under pressure
24  DF  .~ Chemical treatment after start or completion of mechanical defibration
25  DF  .~.~ With additional chemical treatment before start of defibration
26  DF  .~ Simultaneous mechanical defibration and chemical treatment
27  DF  .~ Mechanical defibration of logs or blocks after chemical treatment
28  DF  .~ With plural or specified mechanical defibering step
29  DF  .~ With regeneration, reclamation, reuse, recycling or destruction of digestion fluid
30.1  DF  .~.~ With destruction of organic ingredient in or smelting of liquor
30.11  DF  .~.~.~ Treatment of kraft pulping chemicals
31  DF  .~.~.~ Flames combustion
32  DF  .~.~.~ Liquor from digestion using organic compound or including element other than Na, Ca, Mg, O, C, H or S
33  DF  .~.~.~ With mixing of liquors from different digestions
34  DF  .~.~.~ Plural diverse digestion of same fibrous material
35  DF  .~.~.~ Residue converted into liquor different from original liquor
36  DF  .~.~.~ Sulfur dioxide or sulfite containing spent liquor
37  DF  .~.~ Digestion fluid reused on different fibrous materials
38  DF  .~.~.~ With addition of chemicals prior to reuse
39  DF  .~.~.~.~ In digester
40  DF  .~.~.~ Without treatment or modification
41  DF  .~.~ Recirculation (includes separation from fibers)
42  DF  .~.~.~ With treatment of fluids during recirculation
43  DF  .~.~.~.~ Removal and/or separation of portion of recirculating fluid
44  DF  .~.~.~.~.~ With recombing
45  DF  .~.~.~.~ With addition of chemicals to recirculating fluid
46  DF  .~.~.~ Steam only
47  DF  .~ With heat recovery
48  DF  .~ With cleaning, preserving or conditioning of apparatus
49  DF  .~ With testing, sampling or analyzing
50  DF  .~ Utilizing electrical or radiant energy
51  DF  .~ Digestion odor control
52  DF  .~ Charging and/or discharging fibrous material
53  DF  .~ Vacuum treatment
54  DF  .~ Freezing
55  DF  .~ With classifying, separating or screening of pulp (solids from solids)
56  DF  .~ With squeezing, compression, rubbing, kneading
57  DF  .~ With agitation or forced circulation
58  DF  .~.~ In rotating vessel
59  DF  .~.~ Closed circuit circulation
60  DF  .~ With washing
61  DF  .~ Regulatory
62  DF  .~.~ Concentration of chemicals
63  DF  .~ Gas, vapor or mist contact
64  DF  .~.~ Sulfur dioxide
65  DF  .~.~ Oxygen, ozone or air
66  DF  .~.~ Chlorine containing material
67  DF  .~.~.~ Chlorine dioxide
68  DF  .~.~ Steam only
69  DF  .~ Non-continuous liquid phase
70  DF  .~ Treatment with particular chemical
71  DF  .~.~ Treatment of ground-wood or sawdust
72  DF  .~.~ Organic
73  DF  .~.~.~ With inorganic chlorine containing material
74  DF  .~.~.~ Chlorine containing
75  DF  .~.~.~ Fat, fatty oil or higher fatty acid
76  DF  .~.~.~ Acids, salts or esters
77  DF  .~.~.~ Alcohols or phenols
78  DF  .~.~ Per-compound (e.g., peroxide, perborate)
79  DF  .~.~ Heavy metal or aluminum containing
80  DF  .~.~ Phosphorus, boron or silicon containing
81  DF  .~.~ Nitrogen oxide, acid, or salt thereof
82  DF  .~.~ Sulfur containing
83  DF  .~.~.~ Sulfur dioxide or sulfite
84  DF  .~.~.~.~ Plural diverse stage treatment
85  DF  .~.~.~.~.~ Chlorine containing material in at least one stage
86  DF  .~.~.~.~.~ Alkali metal, ammonium, alkaline earth metal or magnesium hydroxide or carbonate in at least one stage
87  DF  .~.~ Chlorine containing
88  DF  .~.~.~ Plural diverse stage treatments
89  DF  .~.~.~.~ Alkali metal, ammoninum, alkaline earth metal or magnesium hydroxide or carbonate in at least one stage
90  DF  .~.~ Alkali metal, ammonium, alkaline earth metal or magnesium hydroxide or carbonate
91  DF  .~ Particular raw cellulosic materials
92  DF  .~.~ Fossilized, (e.g., peat)
93  DF  .~.~ Bark
94  DF  .~.~ Bamboo
95  DF  .~.~ Cotton fibers or linters
96  DF  .~.~ Sugar cane, bagasse or cornstalks
97  DF  .~.~ Cereal grasses or straws
98  DF  .~.~ Bast (e.g., flax, hemp, jute, ramie, sisal)
99  DF  .~.~ Non-wood
100  DF  PROCESSES AND PRODUCTS
101  DF  .~ Pore forming in situ (e.g., gas generation)
102  DF  .~ Utilizing non-aqueous suspending medium
103  DF  .~ Including solid non-waterlaid preform
104  DF  .~.~ Between separately formed webs
105  DF  .~.~ Metallic
106  DF  .~.~.~ Electrical conductor
107  DF  .~.~ Glass
108  DF  .~.~ Woven fabric or parallel strands
109  DF  .~ Non-uniform, irregular or configured web or sheet
110  DF  .~.~ Watermarking
111  DF  .~.~ Creping and/or crinkling
112  DF  .~.~.~ With coating and/or laminating
113  DF  .~.~.~ With additional deformation
114  DF  .~.~ By perforating
115  DF  .~.~ By fluid pressure
116  DF  .~.~ By configured forming mold
117  DF  .~.~ Subsequent treatment by irregular or configured die
118  DF  .~ With winding or roll forming
119  DF  .~.~ With coating
120  DF  .~.~ With cutting and/or removing material
121  DF  .~.~ With heat
122  DF  .~.~ With pressure
123  DF  .~ Multi-layer waterlaid webs or sheets
124  DF  .~.~ With non-fiber added between layers
125  DF  .~.~ Layers of different properties
126  DF  .~.~.~ Color
127  DF  .~.~.~ Organic additive
128  DF  .~.~.~ Inorganic additive
129  DF  .~.~.~ Fiber
130  DF  .~.~.~.~ Dimension
131  DF  .~.~.~.~ Orientation
132  DF  .~.~ Separately formed webs subsequently united
133  DF  .~.~.~ On common felt or carries (non-mold)
134  DF  .~ With printing and/or variegated coloring
135  DF  .~ With coating after drying
136  DF  .~.~ With treatment subsequent to coating
137  DF  .~.~ Plural layer coating
138  DF  .~ Electrical or magnetic product characteristic
139  DF  .~ Cigarette paper
140  DF  .~ Safety, identification and fraud preventing paper
141  DF  .~ Plural fiber containing
142  DF  .~.~ Undigested cellulosic fiber
143  DF  .~.~ Animal or proteinaceous
144  DF  .~.~.~ Leather
145  DF  .~.~ Mineral
146  DF  .~.~ Synthetic (including chemically modified cellulose)
147  DF  .~.~ Waste paper or textile waste
148  DF  .~.~ Non-wood
149  DF  .~.~ Fibers of different dimensions
150  DF  .~ Undigested cellulosic fiber
151  DF  .~ Animal or proteinaceous fiber
152  DF  .~ Mineral fiber
153  DF  .~.~ Asbestos
154  DF  .~.~.~ With Portland cement
155  DF  .~.~.~ With organic additive
156  DF  .~.~ Glass
157.1  DF  .~ Synthetic fiber (including chemically modified cellulose)
157.2  DF  .~.~ Synthetic resin
157.3  DF  .~.~.~ Polyamide, polyester or polyurethane
157.4  DF  .~.~.~ Polymerized unsaturated compound
157.5  DF  .~.~.~.~ Hydrocarbon or halohydrocarbon
157.6  DF  .~.~ Cellulosic
157.7  DF  .~.~.~ Regenerated cellulose, viscose or rayon
158  DF  .~ Non-fiber additive
159  DF  .~.~ Fire proofing agent
160  DF  .~.~ Preservative or antioxidant
161  DF  .~.~.~ Biocidal
162  DF  .~.~ Coloring agent
163  DF  .~.~ Fiber supplied constituent
164.1  DF  .~.~ Synthetic resin
164.2  DF  .~.~.~ Ion exchange resin or molecular sieve
164.3  DF  .~.~.~ Epoxy containing reactant
164.4  DF  .~.~.~ Silicon containing
164.5  DF  .~.~.~ Sulfur containing
164.6  DF  .~.~.~ Nitrogen containing
164.7  DF  .~.~.~ Ester type
165  DF  .~.~.~ Phenol-aldehyde
166  DF  .~.~.~ Amine- or amide-aldehyde
167  DF  .~.~.~.~ With additional organic reactant
168.1  DF  .~.~.~ Polymerized unsaturated compound
168.2  DF  .~.~.~.~ Nitrogen containing compound
168.3  DF  .~.~.~.~.~ Acrylamide containing
168.4  DF  .~.~.~.~.~.~ Heterocyclic N or S or epoxy component
168.5  DF  .~.~.~.~.~ Heterocyclic N or S or epoxy component
168.6  DF  .~.~.~.~ Hetero S or epoxy component
168.7  DF  .~.~.~.~ Ester type
169  DF  .~.~.~.~ From polyene compound
170  DF  .~.~ Natural hydrocarbon gum (rubber)
171  DF  .~.~ Bitumen
172  DF  .~.~ Wax
173  DF  .~.~ Hydrocarbon
174  DF  .~.~ Protein
175  DF  .~.~ Carbohydrate
176  DF  .~.~.~ Cellulose (non-fibrous)
177  DF  .~.~.~ Cellulose derivative (e.g., cellulose ester)
178  DF  .~.~.~ Gum
179  DF  .~.~ Fat, fatty oil, or higher fatty acid
180  DF  .~.~ Natural resin
181.1  DF  .~.~ Inorganic
181.2  DF  .~.~.~ Metal salt other than silicate
181.3  DF  .~.~.~.~ Sulfate or sulfite
181.4  DF  .~.~.~ Metal oxide or hydroxide
181.5  DF  .~.~.~.~ Metal other than alkali metal, magnesium, or alkaline earth metal
181.6  DF  .~.~.~ Silicon containing additive other than clay
181.7  DF  .~.~.~.~ Alkali metal silicate
181.8  DF  .~.~.~ Clay
181.9  DF  .~.~.~ Free metal or free carbon containing
182  DF  .~.~ With preparatory chemical treatment of fiber
183  DF  .~.~ Incorporation procedures
184  DF  .~.~.~ Application to formed web
185  DF  .~.~.~.~ Part added to furnish or pulp
186  DF  .~.~.~.~ On mold
187  DF  .~ Hydration and/or gelatinization
188  DF  .~ Non-uniform internal structure
189  DF  .~ Reclamation, salvage or reuse of materials
190  DF  .~.~ White water
191  DF  .~.~ Broke or trim
192  DF  .~ Utilizing electrical or wave energy
193  DF  .~ Lead strip forming and/or guiding
194  DF  .~ With cutting and/or slitting
195  DF  .~.~ Fluid deckle or shower
196  DF  .~ With folding or twisting (e.g., roving)
197  DF  .~ With stretching, tensioning, decurling, flexing or breaking
198  DF  .~ With measuring, inspecting and/or testing
199  DF  .~ Conditioning, preparing or repairing of apparatus
200  DF  .~.~ Wire stringing
201  DF  .~ Combined processes
202  DF  .~ Running or indefinite length work forming and/or treating processes (e.g., web)
203  DF  .~.~ Forming single web between opposed forming surfaces
204  DF  .~.~ Subsequent treatment of formed web
205  DF  .~.~.~ Pressure
206  DF  .~.~.~.~ With heating and/or cooling
207  DF  .~.~.~ Heating, cooling, gas or vapor contact
208  DF  .~.~ Treatment of slurry on mold surface
209  DF  .~.~.~ Vibration or agitation
210  DF  .~.~.~ Pressure member
211  DF  .~.~ Inhibiting or restricting drainage through mold
212  DF  .~.~ Directing slurry into association with mold
213  DF  .~.~.~ Projecting or slinging stock
214  DF  .~.~.~ Pressure forming
215  DF  .~.~.~ Counter or transverse of mold movement
216  DF  .~.~.~ Mechanical treatment of slurry in head box or approach flow
217  DF  .~.~ Suction through mold
218  DF  .~ Article forming processes (pulp molding)
219  DF  .~.~ Plural stage deposition
220  DF  .~.~ Pressing with flexible diaphragm
221  DF  .~.~ Treatment subsequent to removal from forming mold
222  DF  .~.~.~ Surface treatment
223  DF  .~.~.~ Reshaping (i.e., changing configuration)
224  DF  .~.~.~ Heat and/or mechanical pressure
225  DF  .~.~.~.~ Boards or sheets
226  DF  .~.~ Applying heat to work on forming mold
227  DF  .~.~ Applying mechanical pressure to work on forming mold
228  DF  .~.~ Accretion from bulk
229  DF  .~.~.~ Vibration of mold and/or slurry
230  DF  .~.~ Separation from mold or core
231  DF  .~ Articles
232  DF  APPARATUS
233  DF  .~ Digester
234  DF  .~.~ With mechanical defibering means
235  DF  .~.~.~ Concurrent
236  DF  .~.~.~.~ Continuous
237  DF  .~.~ Continuous
238  DF  .~.~ Automatic control
239  DF  .~.~ With recovery means
240  DF  .~.~.~ With incinerator or evaporator
241  DF  .~.~ Plural
242  DF  .~.~ Combined
243  DF  .~.~ With pulp agitating or circulating means
244  DF  .~.~.~ Rotating digester
245  DF  .~.~ Removable basket or retaining means
246  DF  .~.~ Charging and/or discharging means (including blow pits)
247  DF  .~.~.~ Target, impact, explosion
248  DF  .~.~ Forced circulation or percolation of fluid only
249  DF  .~.~.~ With heating
250  DF  .~.~ Heating means
251  DF  .~.~ Strainers
252  DF  .~ Automatic control
253  DF  .~.~ Of plural operations
254  DF  .~.~ Of stock working device
255  DF  .~.~ Of lead strip former and/or break sensing
256  DF  .~.~ Of mold movement
257  DF  .~.~.~ Transverse movement of wire
258  DF  .~.~ Of stock consistency
259  DF  .~.~ Of stock feed to forming device
260  DF  .~.~ Of product cutting device
261  DF  .~ With beating, refining, and/or disintegrating means
262  DF  .~ Electric controls or systems
263  DF  .~ Measuring, testing, inspecting, indicating or illuminating
264  DF  .~ White water or broke recovery, recirculation or treatment
265  DF  .~ With coating or impregnating means (including printing)
266  DF  .~.~ Acting on product on mold
267  DF  .~ Molding pulp and non-pulp insert or preform
268  DF  .~.~ Running or indefinite length work
269  DF  .~ With product stacking or piling means
270  DF  .~ Flexing, bending, straightening or decurling means
271  DF  .~.~ Sheet or web
272  DF  .~ Apparatus repair, cleaning or conditioning
273  DF  .~.~ Wire changing and/or tensioning
274  DF  .~.~ Of porous or foraminous member (e.g., felt or mold)
275  DF  .~.~.~ Means applying fluid
276  DF  .~.~.~.~ To cylinder
277  DF  .~.~.~.~ Reciprocating
278  DF  .~.~.~.~.~ With suction means
279  DF  .~.~.~.~ And suction means
280  DF  .~ Web creping or crinkling type
281  DF  .~.~ Cylinder and doctor
282  DF  .~.~.~ Circumferentially grooved cylinder
283  DF  .~ With product winding or reeling means
284  DF  .~.~ Tube winding type
285  DF  .~.~.~ With tube cutting or slitting means
286  DF  .~ With cutting, scoring, perforating or tearing
287  DF  .~ With folding, rolling or twisting means
288  DF  .~ Molding and burnishing means
289  DF  .~ Running or indefinite length product forming and/or treating means
290  DF  .~.~ Molding and heat exchange means
291  DF  .~.~ Moving impermeable member applying stock to mold
292  DF  .~.~ Means flinging or projecting stock against mold
293  DF  .~.~ Product slides relative to molding surface (e.g., extrusion molding)
294  DF  .~.~ Mold intermittently moving relative to supply
295  DF  .~.~ Concave molding surface in longitudinal or transverse section
296  DF  .~.~ Irregular or configured molding surface (e.g., corrugated)
297  DF  .~.~ Pneumatic pressure or vacuum means acting directly on stock on mold surface
298  DF  .~.~ Plural separate streams of stock applied to mold
299  DF  .~.~.~ Longitudinally spaced points of application
300  DF  .~.~ Plural molds or plural spaced areas of application on a single mold
301  DF  .~.~.~ Common vat or stock feed
302  DF  .~.~.~.~ Tangent cylinder molds
303  DF  .~.~.~ Molds converge to unit web
304  DF  .~.~.~ Webs united on common carrier (e.g., felt)
305  DF  .~.~ Molds with subsequent separate pressing means
306  DF  .~.~ Means removing web product from molding surface
307  DF  .~.~.~ Blow off acting through mold
308  DF  .~.~ Means treating stock on molding surface
309  DF  .~.~.~ Irregular treating member or acting non-uniformly across web product
310  DF  .~.~.~.~ Fluid jet or suction means (e.g., shower deckle)
311  DF  .~.~.~ Submerged in supply
312  DF  .~.~.~ Solid treating member
313  DF  .~.~.~.~ Moving
314  DF  .~.~.~.~.~ Rotary
315  DF  .~.~ Means directing stock into contact with molding surface
316  DF  .~.~.~ On to under surface only of mold
317  DF  .~.~.~ Confined stock stream on forming surface (e.g., pressure forming)
318  DF  .~.~.~ Cylinder mold with endless forming belt about
319  DF  .~.~.~.~ Superposed or lateral stock pool
320  DF  .~.~.~ Superposed or lateral stock pool type
321  DF  .~.~.~.~ Cylinder mold
322  DF  .~.~.~ With diverse non-pulp material inlet
323  DF  .~.~.~ Immersion vat type (e.g., cylinder machine vat)
324  DF  .~.~.~.~ Stock flow direction reversing means
325  DF  .~.~.~.~ Stock directed transversely of mold direction
326  DF  .~.~.~.~ Stock applied at plural points on mold periphery
327  DF  .~.~.~.~ Baffles diverting or directing flow against cylinder mold
328  DF  .~.~.~.~.~ Concentric with cylinder
329  DF  .~.~.~.~.~.~ Adjustable to or from cylinder
330  DF  .~.~.~.~ Fluid level control
331  DF  .~.~.~.~ Side seals
332  DF  .~.~.~.~ Mold hanging
333  DF  .~.~.~.~.~ Centerless
334  DF  .~.~.~.~ Mask, deckle or apron
335  DF  .~.~.~.~ With drain or suction means, for white water
336  DF  .~.~.~ Flow box, slice, and/or approach flow
337  DF  .~.~.~.~ Recirculation skimming or excess stock take-off
338  DF  .~.~.~.~ Transversely crossing inlet into flow box
339  DF  .~.~.~.~ Closed to atmosphere
340  DF  .~.~.~.~.~ Air cushion at above atmospheric pressure
341  DF  .~.~.~.~ Vibratile or moving member treating stock
342  DF  .~.~.~.~.~ Immersed rotary member (e.g., rectifier roll)
343  DF  .~.~.~.~ With vanes or pulp stream dividing means
344  DF  .~.~.~.~ Slice
345  DF  .~.~.~.~.~ Plural, longitudinally spaced
346  DF  .~.~.~.~.~ Width adjustment
347  DF  .~.~.~.~.~ Flexible or pivoted
348  DF  .~.~ Flexible endless band type mold (e.g., Fourdrinier)
349  DF  .~.~.~ Concurrently moving back up
350  DF  .~.~.~ Variable slope
351  DF  .~.~.~ Means retarding or controlling drainage through mold
352  DF  .~.~.~.~ Wire bottom scrappers or deflectors
353  DF  .~.~.~ Mask, deckle, or apron
354  DF  .~.~.~ Table structure
355  DF  .~.~.~.~ Vibrating or shaking (e.g., shake frames)
356  DF  .~.~.~.~.~ Perpendicular to plane of wire
357  DF  .~.~ Cylinder molds, per se
358.1  DF  .~.~ Press and felt
358.2  DF  .~.~.~ With felt structure or felt composition
358.3  DF  .~.~.~ Extended nip press
358.4  DF  .~.~.~.~ With impermeable belt structure or impermeable belt composition
358.5  DF  .~.~.~.~ With heating means
359.1  DF  .~.~.~ With separate heated drying means
360.2  DF  .~.~.~ Plural sequential presses
360.3  DF  .~.~.~.~ Having three or more coacting rolls (e.g., compact press, etc.)
361  DF  .~.~ Solid means acting on formed web
362  DF  .~.~.~ Marking or embossing
363  DF  .~.~ Suction devices
364  DF  .~.~.~ Systems
365  DF  .~.~.~ Reciprocating
366  DF  .~.~.~ Adjustable width
367  DF  .~.~.~ Traveling suction face
368  DF  .~.~.~.~ Rotary pervious cylinder
369  DF  .~.~.~.~.~ With non-rotating internal suction box
370  DF  .~.~.~.~.~.~ Plural suction areas
371  DF  .~.~.~.~.~.~ Box carried seals
372  DF  .~.~.~.~.~ Shell structure
373  DF  .~.~.~ Roller face (suction not through rollers)
374  DF  .~.~.~ Wear face structures and materials
375  DF  .~ With heat exchange means
376  DF  .~.~ Heated foraminous forming mold
377  DF  .~.~ Heated die
378  DF  .~.~.~ Contacting work on forming mold
379  DF  .~.~.~.~ Plural successive heated dies
380  DF  .~ Slurry supply conditioning or condition maintaining
381  DF  .~ Combined
382  DF  .~ Foraminous forming mold for discrete articles (pulp molding)
383  DF  .~.~ Differing areas of porosity or of suction on single mold surface (including masking)
384  DF  .~.~ Centrifugal
385  DF  .~.~ With moving slurry supply container
386  DF  .~.~ With handle or hand grip
387  DF  .~.~ Accretion from bulk (i.e., immersed mold)
388  DF  .~.~.~ Means moving mold through, into or out of slurry
389  DF  .~.~.~.~ Relatively moving or separate mold and suction backup
390  DF  .~.~.~.~ Plural and/or compartmented slurry container
391  DF  .~.~.~.~ Rotary or swinging carrier
392  DF  .~.~.~.~.~ With compressor
393  DF  .~.~.~.~ Reciprocating carrier
394  DF  .~.~.~.~.~ With compressor
395  DF  .~.~.~.~ With compressor
396  DF  .~.~ Press felting (i.e., pressure member acting on pulp on mold)
397  DF  .~.~.~ Plural molds (cavities)
398  DF  .~.~.~.~ Plate or sheet type (i.e., opposed flat platens)
399  DF  .~.~.~ Plate or sheet type
400  DF  .~.~.~.~ With cores (e.g., molding of apertured plates)
401  DF  .~.~.~ Flexible diaphragm
402  DF  .~.~.~.~ About foraminous core
403  DF  .~.~.~ Contracting matrix
404  DF  .~.~.~.~ About foraminous core
405  DF  .~.~.~ Expanding and/or contracting core
406  DF  .~.~.~ About foraminous core
407  DF  .~.~ Mold charging means
408  DF  .~.~.~ Pressure charging
409  DF  .~.~.~ Plural discrete areas of mold
410  DF  .~.~ Article ejecting
411  DF  .~.~ Dipping molds, per se
415  DF  .~ Compressor
416  DF  .~.~ Configured die (non-planar)
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CROSS-REFERENCE ART COLLECTIONS
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900  DF  PAPERMAKING PRESS FELTS
901  DF  IMPERMEABLE BELTS FOR EXTENDED NIP PRESS
902  DF  WOVEN FABRIC FOR PAPERMAKING DRIER SECTION
903  DF  PAPER FORMING MEMBER (E.G., FOURDRINIER, SHEET FORMING MEMBER, ETC.)
904  DF  WITH SPECIFIED SEAM STRUCTURE OF PAPERMAKING BELT
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DIGESTS
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DIG 2  DD  Chip soaking
DIG 3  DD  Wetting agent
DIG 4  DD  Pitch control
DIG 5  DD  Alpha cellulose
DIG 6  DD  Moisture and basic weight
DIG 7  DD  Water collectors (e.g., save-alls)
DIG 8  DD  Chlorine-containing liquid regeneration
DIG 9  DD  Uses for paper making sludge
DIG 10  DD  .~ Computer control of paper making variables
DIG 11  DD  .~.~ Wet end paper making variables
DIG 12  DD  Seasoning