US PATENT SUBCLASS 427 / 58
ELECTRICAL PRODUCT PRODUCED

Current as of: June, 1999
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427 /   HD   COATING PROCESSES

58ELECTRICAL PRODUCT PRODUCED {21}
59  DF  .~> Welding electrode {2}
62  DF  .~> Superconductor {1}
64  DF  .~> Fluorescent or phosphorescent base coating (e.g., cathode-ray tube, luminescent screen, etc.) {8}
74  DF  .~> Photoelectric {2}
77  DF  .~> Electron emissive or suppressive (excluding electrode for arc) {1}
79  DF  .~> Condenser or capacitor {2}
96  DF  .~> Integrated circuit, printed circuit, or circuit board {3}
100  DF  .~> Piezoelectric properties
101  DF  .~> Resistor for current control (excludes heating element) {2}
104  DF  .~> Motor stator or core for winding
105  DF  .~> Hollow article {1}
108  DF  .~> Transparent base {2}
111  DF  .~> Filament for lamp or tube {1}
113  DF  .~> Carbon base {1}
115  DF  .~> Fuel cell part
116  DF  .~> Coil or winding
117  DF  .~> Wire conductor {3}
121  DF  .~> Cellulosic or fibrous base (e.g., wood, paper, etc.)
122  DF  .~> Carbon coating
123  DF  .~> Metal coating {2}
126.1  DF  .~> Metallic compound coating {2}

DEFINITION

Classification: 427/58

(under the class definition) Processes directed to the formation of a product which has a claimed or solely disclosed electrical function.

(1) Note. This subclass and indents hereunder provide for the formation of subcombinations of or incomplete electrical products, e.g., metal coated paper claimed or solely disclosed to be used in a condenser, etc.

(2) Note. For classification here the electrical function of coated product must be direct and not remote, and for example includes light bulbs but not lamp shades and telephone insulators but not telephone poles.

(3) Note. Antistatic coating processes, unless the product formed has an electrical function, are not provided for here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5, for formation of electrical products with a radioactive base or coating. 127, for magnetic base or coating where the article produced does not include an electrically conductive part.

SEE OR SEARCH CLASS

29, Metal Working,

25.01+, and the other classes mentioned in the search notes thereto for the manufacture of barrier layer devices. See subclasses 592.1+ for processes of making various electrical devices by Class 29 operations or by operations not elsewhere provided for.

148, Metal Treatment, particularly

516+, for processes of coating metal combined with heat treatment of metal to modify or maintain the internal physical structure (i.e., microstructure) or chemical property of metal. See subclasses 206+ of Class 148 for processes of carburizing or nitriding of metal or subclasses 240+ for processes of producing a reactive coating on solid metal, the coating being a metal compound in which an element of the same is furnished by the metal base. See also section III of the Class 427 definition and section III, C, of the Class 148 definition. Class 148 contains processes of heat treating thoriated and similarly coated metal filaments to activate or reduce the coating.

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

47+, for miscellaneous processes of making electric conductors, where the process involves more than a coating operation and no other class provides for the combination of operations claimed.

204, Chemistry: Electrical and Wave Energy,

192.1+, for forming electron emissive or conductive coatings by cathode sputtering. Class 204 also provides for bases provided with electron emissive or conductive coatings which are defined as being made by a process coming within the scope of Class 204 except products which comprise two or more contiguous metallic layers for which see Class 29, Metal Working. Such coated bases are classified in Class 204 in the subclass which provides for the process of producing the coated base. Where the sole disclosure of the patent is that the base is coated by a Class 204 process, but the base is

not claimed as being coated by a Class 204 process, the patent is classified in Class 29 or 427. Also, see the reference to Class 204 in the class definition of this class (427).

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, 80+, for processes of forming electron emissive or conductive coatings by electrolytic coating. Class 205 also provides for bases provided with electron emissive or conductive coatings which are defined as being made by a process coming within the scope of Class 205 except products which comprise two or more contiguous metallic layers for which see Class 29, Metal Working. Such coated bases are classified in Class 205 in the subclass which provides for the process of producing the coated base. Where the sole disclosure of the patent is that the base is coated by a Class 205 process, but the base is not claimed as being coated by a Class 205 process, the patent is classified in Class 29 or 427. Also, see the reference to Class 205 in the class definition of this class (427).

252, Compositions,

62.2, for the composition of electrolytes for electrical circuit components, and subclass 62.3 for barrier layer compositions, subclasses 500+ for electron emissive and conductive compositions. The general line stated in the class definition of Class 427 as to the line between Class 427 and the composition classes applies to the line between these subclasses in Class 427 and subclasses 500+ of Class 252.

264, Plastic and Nonmetallic Article Shaping or Treating: Processes, appropriate subclasses for processes within the class definition, of making electrodes from nonmetallic plastic material by a significant plastic working operation when combined with a coating operation. The process of shaping broadly followed by coating is classified in Class 427, as is the process of coating a previously shaped body. Also in Class 264, see

29.1+, and 171.1+ for patents which may disclose making of electrical conductors, and subclasses 104+ specifically for molding or shaping of electro conductive material.

428, Stock Material or Miscellaneous Articles,

615+, provides for metal coated metal bases as compound metal stock, even though the coated product is claimed as being electrically conductive or emissive.

445, Electric Lamp or Space Discharge Component or Device Manufacturing,

35+, 46+, and 60+ for other methods and apparatus for

manufacturing electrodes of electrodes of electric lamp and electric space discharge devices.