US PATENT SUBCLASS 501 / 11
.~ Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions

Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
11.~ Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions {11}
12  DF  .~.~> Made by gel route
13  DF  .~.~> Radiation color change responsive
14  DF  .~.~> Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) {4}
27  DF  .~.~> Glass batch forming compositions (i.e., glass batch compositions) {4}
32  DF  .~.~> Glass and material other than glass (e.g., crystal glass, opal glass, etc.)
33  DF  .~.~> Beads {1}
35  DF  .~.~> Fibers {3}
39  DF  .~.~> Pore-forming
40  DF  .~.~> Nonoxide glasses (e.g., fluoride glasses, etc.)
41  DF  .~.~> Nonsilicate oxide glasses {4}
53  DF  .~.~> Silica containing {3}

DEFINITION

Classification: 501/11

Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions:

(under subclass 1) Compositions which comprise a glass or compositions intended to be heat treated so as to form a glass.

(1) Note. To be classified herein, the chemical nature of the glass composition must be unspecified.

(2) Note. A typical disclosure appropriate for this subclass might be, e.g., a product by process claim, etc.

(3) Note. Compositions containing both glass and nonglass materials in which the glass serves merely as a binder for particles of the other material are not included herein, but are classified on some other basis.

(4) Note. This and indented subclasses include compositions of enamels and glazes, etc., which are glasses.

(5) Note. Documents classified as originals in this and indented subclasses which disclose optical glass compositions are cross-referenced in subclasses 900+.

SEE OR SEARCH CLASS

65, Glass Manufacturing, 134+, for processes of purifying or homogenizing molten glass.

220, Receptacles,

2.1+, for envelopes for electric lamps, electronic tubes and similar devices which are made of glass. Where no more is claimed than an envelope of a specific composition of glass the patent is classified in this class (501). Where the composition is claimed and also some structure of the envelope, the patent is classified in Class 220.