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:
Apr. 01, 1986
Filed:
Jan. 08, 1985
Applicant:
Inventors:
James R Hause, Tucson, AZ (US);
Eric Mendel, Poughkeepsie, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 66 ; 4285428 ; 428213 ;
Abstract
A semiconductor wafer shape which when subjected to a simultaneous polishing of both wafer surfaces produces a wafer of superior flatness and surface finish, the said wafer having a diametral cross-sectional shape like that of a 'dogbone' wherein the wafer is thinner in its medial region than it is in the peripheral region and has rounded edges, this shape resulting from a chemical thinning operation.
Hause, James. (1986). Wafer shape and method of making same (U.S. Patent No. 4579760). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4579760
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile