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:
Jul. 27, 1976
Filed:
Apr. 21, 1975
Applicant:
Inventors:
Marian Briska, Boeblingen, DT;
Wolfgang Hoffmeister, Gaertringen, DT;
Herbert Kuhlmey, Boeblingen, DT;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; C09K / ;
U.S. Cl.
CPC ...
156 13 ; 156 17 ; 252 792 ;
Abstract
The invention relates to a method of etching solid, chemically resistant materials containing silicon (Si) by means of a hot melt made up of Society phosphorus pentoxide (P.sub.2 O.sub.5) and phosphoric acid (H.sub.3 PO.sub.4) (anhydrous).
Briska, Marian. (1976). Method of etching materials containing silicon (U.S. Patent No. 3971683). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3971683
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile