Patent · US Expired

Advanced case carburizing secondary hardening steels

US6485582B1 · kind B1 · utility

5Cited by

9References

5Claims

0Family size

Inventors

Charles J. Kuehmann · Deerfield, US
Gregory B. Olson · Riverwoods, US
John P. Wise · Cambridge, US
Carelyn Campbell · Germantown, US

Key dates

Filing date	Aug 17, 2000
Grant date	Nov 26, 2002
Priority date	—
Expiry date	Aug 17, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H55/06
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Steel alloys susceptible to case and core hardening comprising 0.05 to 0.24 weight percent carbon; 15 to 28 weight percent cobalt and 1.5 to 9.5 weight percent in nickel, small percentages of one or more additives: chromium, molybdenum, and vanadium; and the balance iron.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.