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:
Mar. 14, 1995
Filed:
Jul. 06, 1993
Applicant:
Inventors:
Etienne Philippot, Saint Mathieu de Treviers, FR;
Olivier Cambon, Montpellier, FR;
Aline Goiffon, Saint Clement de Riviere, FR;
Alain Ibanez, Clapieres, FR;
Daniele Cachau Hereillat, Le Cres, FR;
Assignee:
Compagnie d'Electronique et de Peizo-Electricite CEPE, Argenteuil, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
156662 ; 156663 ; 156637 ; 65 31 ; 252 791 ; 252 795 ;
Abstract
Quartz sections having a surface condition as polished as possible are prepared by controlled dissolution by placing said quartz sections in a bath of a quartz solvent or a mixture of solvents, wherein the bath is basic and comprises an alkaline hydroxide or fluoride, or ammonium hydroxide, or a mixture of these compounds; and conducting controlled dissolution of the quartz sections at atmospheric pressure.