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:
Jan. 04, 2005
Filed:
Jun. 18, 2003
Raanan Y. Zehavi, Sunnyvale, CA (US);
Robert L. Davis, Belmont, CA (US);
David B. Ackard, San Jose, CA (US);
James W. Govorko, Sunnyvale, CA (US);
Raanan Y. Zehavi, Sunnyvale, CA (US);
Robert L. Davis, Belmont, CA (US);
David B. Ackard, San Jose, CA (US);
James W. Govorko, Sunnyvale, CA (US);
Integrated Materials, Inc., Sunnyvale, CA (US);
Abstract
A method of welding two silicon workpieces () together into one member without the formation of cracks along the weld. A first method passes current () through one or both of the workpieces to heat them to between 600 and 900° C. Then an electric, laser, or plasma welder () passes along the seam () between the workpieces to weld them together. A second method passing current () through a plate (), preferably formed of silicon, which either supports the workpieces or is brought into contact with at least one of them, whereby the workpieces are preheated prior to the welding operation.