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:
Aug. 19, 1986
Filed:
Apr. 30, 1985
Donna J Clodgo, Richmond, VT (US);
Rosemary A Previti-Kelly, Richmond, VT (US);
Erick G Walton, South Burlington, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A lift-off metal deposition process in which a high temperature polyimide layer (i.e. a polyimide having a high imidization temperature) is applied to a first polyimide layer. The two layers are anisotropically etched through a photoresist mask to form vias in the first polyimide layer. After application of a metal layer, the high-temperature polyimide layer is lifted off the first polyimide layer, which remains as a passivation layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile