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. 15, 1998
Filed:
Sep. 16, 1996
Applicant:
Inventors:
Katsuhiko Kemmochi, Koriyama, DE;
Dietmar Hellmann, Linsengericht, DE;
Christian Gebauer, Tokyo, DE;
Assignee:
Heraeus Quarzglas GmbH, Hanau, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B / ; C03B / ; C03C / ;
U.S. Cl.
CPC ...
65 324 ; 65601 ; 65 603 ; 65 606 ; 65 93 ; 65 95 ; 428426 ; 428448 ; 428698 ;
Abstract
A silica glass member shows a glassy carbon coating wherein a surface of a silica glass substrate of the silica glass member shows a mean surface roughness (R.sub.a) in a range of 0.03 .mu.m to 2 .mu.m and it is coated with a glassy carbon coating. The member is manufactured by chemically roughening the substrate to a surface roughness in the above recited range; coating the surface of the silica glass substrate with an organic raw material containing carbon, curing and thereafter carbonizing the film of the organic raw material by forming a glassy carbon coating.