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:
Apr. 30, 1991
Filed:
Oct. 20, 1989
Applicant:
Inventors:
Junichi Sato, Tokyo, JP;
Minoru Shimizu, Osaka, JP;
Assignees:
Showa Denko K.K., Tokyo, JP;
Osaka Kongo Seito Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912172 ; 21912185 ;
Abstract
A method of machining a diamond workpiece by a laser beam in which a metallic membrane or layer is formed on at least one surface of the workpiece before the workpiece is subjected to the machining operation. The metallic membrane or layer is preferably formed on both side surfaces of a plate-like diamond workpiece. The workpiece machined according to the present invention has a good appearance without cracks and splinters, and a smooth cut surface.