US PATENT SUBCLASS 428 / 685-- .~.~.~.~.~.~ Containing more than 10% nonferrous elements (e.g., high alloy, stainless)

US PATENT SUBCLASS 428 / 685
.~.~.~.~.~.~ Containing more than 10% nonferrous elements (e.g., high alloy, stainless)

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}
681	DF	.~.~.~.~ Fe-base component {2}
684	DF	.~.~.~.~.~ Containing 0.01-1.7% carbon (i.e., steel) {1}
685		.~.~.~.~.~.~ Containing more than 10% nonferrous elements (e.g., high alloy, stainless)

DEFINITION

Classification: 428/685

(under subclass 684) Subject matter in which the iron-base component also contains more than 10 percent of other material.

(1) Note. The mere designation of a component as "stainless steel" or "high alloy steel" is sufficient for classification herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

619, to complete a search for this subject matter.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, 433+, for producing Iron(Fe) or treating molten metal that contains over 50 per cent by weight Iron.

148, Metal Treatment,

542, 592, 597, and 605-611 for processes of treating solid iron based alloys containing greater than 9 percent chromium to modify or maintain the internal physical structure (i.e., microstructure) or chemical properties of metal. If metal casting, fusion bonding, machining, or working is involved, there is a requirement of significant heat treatment as described in section III, A, of the Class 148 definition.