US PATENT SUBCLASS 428 / 621
.~.~ With additional, spatially distinct nonmetal component

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

544  DF  ALL METAL OR WITH ADJACENT METALS {31}
615  DF  .~ Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.) {15}
621.~.~ With additional, spatially distinct nonmetal component {7}
622  DF  .~.~.~> More than one such component {1}
624  DF  .~.~.~> Organic component {2}
627  DF  .~.~.~> Boride, carbide or nitride component
628  DF  .~.~.~> Component contains compound of adjacent metal {1}
630  DF  .~.~.~> Noncrystalline silica or noncrystalline plural-oxide component (e.g., glass, etc.) {1}
632  DF  .~.~.~> Oxide-containing component {1}
634  DF  .~.~.~> Free carbon containing component

DEFINITION

Classification: 428/621

(under subclass 615) Subject matter having a nonmetal component, that is, a spatially distinct continuum which is not a metal, an alloy, or an intermetallic compound.

(1) Note. To be classified in this subclass, the article or stock-material* must be classifiable in this class, subclasses 615+ in the absence of the nonmetal component, that is, it must have at least two different contiguous metal layers or portions.

(2) Note. Nonmetals are the elements designed as such in the definition of subclass 615, (9) Note, the compounds of these elements.Silicon is considered to be metal and intermetallic compounds are considered to be alloys.

SEE OR SEARCH THIS CLASS, SUBCLASS:

344, 385 and 444, for a laminate including a single layer of metal adjacent a nonmetal layer.

545, for composites* having a component* in which a nonmetal continuum is interengaged with a metal continuum.

551, for a composite* of the type classifiable in these subclasses (621+) where a metal component* is particulate. 560+, for composites* having metal particles dispersed in a nonmetal matrix component which is adjacent a metal component.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

759, for a bonded metal to nonmetal joint of that class.

148, Metal Treatment,

206, 238 for processes of carburizing, nitriding, or both (e.g., carbonitriding, etc.) of solid metal, and subclasses 316-319 for resulting stock.

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,

171+, and 316+ for a single metal layer coated with a nonmetal by a process of that class.

336, Inductor Devices,

234, for a laminated magnetic core.

361, Electricity: Electrical Systems and Devices, 271+, for electrostatic condensers.

427, Coating Processes,

258+, and 402+ for application of plural diverse coatings or coating a coated base.