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:
Jun. 20, 2023
Filed:
Jun. 23, 2022
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventor:
Ryo Mitta, Ibaraki, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 37/012 (2006.01); C03B 37/014 (2006.01); C03C 13/04 (2006.01);
U.S. Cl.
CPC ...
C03B 37/01211 (2013.01); C03B 37/01251 (2013.01); C03B 37/01446 (2013.01); C03B 2201/12 (2013.01); C03B 2201/31 (2013.01); C03C 13/045 (2013.01); Y10T 428/2949 (2015.01);
Abstract
Provided is an optical fiber glass preform in which a starting rod and a dummy glass are hardly separated from each other, and a method for manufacturing the glass preform. In the optical fiber glass preform, the dummy glass is fitted into one end of the starting rod, and a part of the dummy glass and the starting rod are surrounded by a clad glass. In the manufacturing method, at the time of connecting the starting rod and the dummy glass, a shape is adjusted in such a manner that an iron is brought into contact with a connection portion and is moved from a starting rod side toward a dummy glass side with appliance of a load.