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. 14, 1985
Filed:
Jun. 10, 1983
Applicant:
Inventors:
Livio Baldi, Tortona, IT;
Aldo Maggis, Vimercate, IT;
Assignee:
SGS-ATES Componenti Elettronici S.p.A., Catania, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 90 ; 427124 ; 427125 ; 4273833 ;
Abstract
On the back of a wafer there are deposited firstly a gold layer and then an aluminium layer (eventually including a small silicon percent). It is finally carried out a thermic treatment at low temperature, which causes the aluminium migration towards the wafer through the gold layer.
Baldi, Livio. (1985). Metallization process of a wafer back (U.S. Patent No. 4517226). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4517226
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile