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:
Sep. 26, 1978
Filed:
Jun. 17, 1977
Applicant:
Inventors:
Friedrich Christian Brunner, Sindelfingen, DE;
Friedrich Wilhelm Schwerdt, Sindelfingen, DE;
Hans-Heinz Steinbeck, Boeblingen, DE;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ;
U.S. Cl.
CPC ...
423339 ; 51308 ;
Abstract
Amorphous silicon dioxide particles for polishing semiconductor surfaces are prepared by boiling, at reflux, a mixture of surplus organic amine, a hydroxybenzene, water and silicon in the presence of oxygen to precipitate silicon dioxide.
Brunner, Friedrich. (1978). Method of making an amorphous silicon dioxide free of metal ions (U.S. Patent No. 4117093). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4117093
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile