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:
Apr. 29, 2008
Filed:
Oct. 04, 2004
Applicants:
Larry Q. Zeng, Euclid, OH (US);
Victor L. Lou, Schenectady, NY (US);
Frederic F. Ahlgren, Highland Heights, OH (US);
Anil Raj Duggal, Niskayuna, NY (US);
Inventors:
Larry Q. Zeng, Euclid, OH (US);
Victor L. Lou, Schenectady, NY (US);
Frederic F. Ahlgren, Highland Heights, OH (US);
Anil Raj Duggal, Niskayuna, NY (US);
Assignee:
Momentive Performance Materials Inc., Wilton, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 37/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A silica deposition tube is fused in a deuterium (D) gas atmosphere and optionally baked in a deuterium (D) gas atmosphere to substantially reduce the hydrogen content in the tube for decreased fiber attenuation. Alternatively, raw silica material is pre-treated in Dgas followed by fusing of the raw silica tube in a Dgas environment.