The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2001
Filed:
May. 01, 2000
Applicant:
Inventors:
Thomas Bell, Merseyside, GB;
Yong Sun, Birmingham, GB;
Assignee:
The University of Birmingham, Birmingham, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 8/36 ;
U.S. Cl.
CPC ...
C23C 8/36 ;
Abstract
Austenitic stainless steel articles are treated to produce a hardened surface layer thereon by plasma heat-treating the articles at a temperature in the range of 300 to 600° C. and at a pressure in the range of 100 to 1500 Pa in a carbon-containing treatment atmosphere so as to introduce carbon interstitially into the austenite phase in a surface layer on the article.