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:
Nov. 18, 1980
Filed:
Dec. 04, 1978
Applicant:
Inventor:
Hermann Putz, Schongau, DE;
Assignee:
Hoerbiger & Co., Schongau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ; B22F / ;
U.S. Cl.
CPC ...
7520 / ; 75224 ;
Abstract
Sintered friction laminae are produced by scattering metal powder on a steel substrate and then sintering the powder/substrate article in a furnace with free nitrogen in the furnace atmosphere, which atmosphere is continually renewed. The nitrogen is produced by decomposition of ammonia and diffuses into the steel substrate to harden the steel.