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. 02, 2004
Filed:
Jun. 02, 2000
Applicant:
Inventors:
Hiroshi Tsumura, Annaka, JP;
Hiroyuki Koide, Annaka, JP;
Yuuji Tobisaka, Annaka, JP;
Kazuhisa Hatayama, Annaka, JP;
Go Ogino, 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 8/04 ;
U.S. Cl.
CPC ...
C03B 8/04 ;
Abstract
An apparatus for manufacturing a glass base material which is an parent material of an optical fiber, comprising: a tank which contains a raw material of the glass base material to vaporize the raw material to generate a raw material in gas phase; a temperature control unit which controls a temperature of the raw material; and a pressure control unit which controls the pressure of the raw material in gas phase.