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:
Oct. 22, 2002
Filed:
Jan. 19, 2000
Applicant:
Inventors:
Hideki Fujii, Annaka, JP;
Takaaki Nagao, Annaka, JP;
Shoji Hoshino, Annaka, JP;
Tadakatsu Shimada, Annaka, JP;
Hideo Hirasawa, Annaka, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 3/7023 ;
U.S. Cl.
CPC ...
C03B 3/7023 ;
Abstract
The optical fiber base material heat treatment method can be provided that the first flame polishing heats the surface of the optical fiber base material ( ) with fixing a length of the optical fiber base material ( ) and the second flame polishing heats the surface of the optical fiber base material ( ) by lower temperature than the temperature of the heating of the first flame polishing.