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:
May. 11, 1982
Filed:
Jun. 02, 1980
Applicant:
Inventor:
Shou C Liang, Spokane, WA (US);
Assignee:
Cominco Ltd., Vancouver, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
228222 ; 228254 ; 228240 ;
Abstract
A method is described for attaching a preformed solder ring to a cover used to hermetically seal a container for a semiconductor device. The surface of the preformed solder ring that engages the cover is caused to melt and bond to the cover on solidification while the opposite surface of the ring is maintained relatively cool in a solid state by abutment against the flat surface of a cooling block.