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:
Feb. 12, 1991
Filed:
Sep. 11, 1989
Applicant:
Inventors:
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Shonan Chikka Kogyo Co, Ltd., Fujisawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
427431 ; 427435 ; 4274301 ;
Abstract
A method for salt bath-nitriding a metal member having a blind hole, which comprises supporting the metal member so that the open side of the blind hole is directed upward, filling a salt bath-nitriding agent into the blind hole and immersing the resultant metal member in a salt bath melt.