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. 27, 2001
Filed:
Jul. 10, 2000
Applicant:
Inventor:
Kenichi Hayashi, Kanagawa, JP;
Assignee:
Sumitomo Heavy Industries Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K 2/600 ; B23K 2/606 ; B41M 5/24 ;
U.S. Cl.
CPC ...
B23K 2/600 ; B23K 2/606 ; B41M 5/24 ;
Abstract
A laser beam is radiated from a laser source. The laser beam radiated from the laser source is converged at a converging point inside of a work member to form cracks at the converging point and in its nearby area, by making a cross section of the laser beam at the converging point have a shape long in a first direction perpendicular to an optical axis of the laser beam. Markers easy to increase contrast can be formed in the work member.