US PATENT SUBCLASS 428 / 667
.~.~.~.~.~.~ Next to Co-, Fe-, or Ni-base 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}
655  DF  .~.~ Transition metal-base component {4}
660  DF  .~.~.~ Refractory (Group IVB, VB, or VIB) metal-base component {3}
663  DF  .~.~.~.~ Group VIB metal-base component {3}
666  DF  .~.~.~.~.~ Cr-base component {1}
667.~.~.~.~.~.~ Next to Co-, Fe-, or Ni-base component

DEFINITION

Classification: 428/667

(under subclass 666) Subject matter in which the chromium-base component is adjacent a component having 40 percent or more of cobalt, iron or nickel, or a combination of two or more of these metals.

(1) Note. Patents classified in this subclass are not cross-referenced to subclasses 668, 678, 680, or 681+ on the basis of the Cr/Co-Fe-Ni interface.