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:
Jun. 03, 2003
Filed:
Dec. 18, 1998
Applicant:
Inventors:
Kazuya Kuriyama, Osaka, JP;
Yoichiro Hanada, Osaka, JP;
Assignee:
Komatsu Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 1/500 ;
U.S. Cl.
CPC ...
B23K 1/500 ;
Abstract
Two overlapped semiconductor materials are welded by a melt welding under the influence of a heat source of high energy density. The energy output of the heat source is ramped up slowly at the beginning of welding and ramped down slowly at completion of welding. In one embodiment the semiconductor materials are preheated before welding. In another embodiment, the effective position of the heat source on the semiconductor materials is periodically deflected.