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. 22, 1977
Filed:
Nov. 10, 1975
Applicant:
Inventor:
Gerardus Henricus Van Der Steen, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 32 ; 65134 ; 65136 ;
Abstract
A method for the production of quartz glass objects starting from a melt of silicon dioxide in a helium-hydrogen atmosphere. Oxides, hydroxides or other compounds of K, Mg, Ca, Sr and/or Ba are added in a quantity of between 5 and 200.times.10.sup.-.sup.3 mol.%. The quartz glass obtained has consequently considerable fewer trapped gas bubbles.
Van Der Steen, Gerardus. (1977). Method for the production of objects of quartz-glass by drawing (U.S. Patent No. 4013436). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4013436
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile