US PATENT SUBCLASS 428 / 678
.~.~.~.~ Co-, Fe-, or Ni-base components, alternative to each other*

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}
655  DF  .~.~ Transition metal-base component {4}
668  DF  .~.~.~ Group VIII or IB metal-base component {10}
678.~.~.~.~ Co-, Fe-, or Ni-base components, alternative to each other*

DEFINITION

Classification: 428/678

(under subclass 668) Subject matter in which the claims permit a component base to be selected from more than one of iron, nickel or cobalt, or in which neither of these three metals is present as 40 percent or more of the component, but a combination of any two or the three of them is.

(1) Note. Patents classified here are not cross-referenced to subclasses 668, 680, or 681.

(2) Note. A component base designated merely as "an iron-group metal" is classified herein.

(3) Note. The rules for classification and search of this subclass are the same as those set for "Markush"-type subclasses in the definition of subclass 643, (1) Note and (2) Note.

SEE OR SEARCH CLASS

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

255+, for processes of electrolytically coating a substrate with a Group VIII metal-base alloy from an aqueous bath, and subclasses 269, 270 and 271+ for the same type process directed to a single metal selected from the iron group. 420, Alloys or Metallic Compositions,

8+, for an iron base alloy, subclasses 435+ for a cobalt base alloy, subclasses 580+ for alloys in which no single metal exceeds 50 percent of the composition.