US PATENT SUBCLASS 420 / 66
.~.~.~ Group IV or V transition metal containing

Current as of: June, 1999
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420 /   HD   ALLOYS OR METALLIC COMPOSITIONS

8  DF  FERROUS (I.E., IRON BASE) {24}
34  DF  .~ Nine percent or more chromium containing {14}
65  DF  .~.~ 0.25 percent or more nitrogen containing {1}
66.~.~.~ Group IV or V transition metal containing

DEFINITION

Classification: 420/66

Group IV or V transition metal containing:

(under subclass 65) Alloy or metallic composition which additionally contains one or more of titanium, zirconium, hafnium, vanadium, niobium or tantaium.