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:
Jul. 19, 2016
Filed:
Mar. 22, 2013
Applicant:
Fujikura Ltd., Koto-ku, Tokyo, JP;
Inventors:
Takayuki Kitamura, Sakura, JP;
Akihito Imase, Sakura, JP;
Assignee:
FUJIKURA LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 37/018 (2006.01); C03B 37/012 (2006.01); G02B 6/02 (2006.01); C03B 37/014 (2006.01);
U.S. Cl.
CPC ...
G02B 6/02 (2013.01); C03B 37/0146 (2013.01); C03B 37/01446 (2013.01); C03B 2201/50 (2013.01); C03B 2201/54 (2013.01);
Abstract
A method of manufacturing a glass preform is provided. The method including, vaporizing an alkali metal compound or an alkali earth metal compound and being brought the alkali metal compound or the alkali earth metal compound into contact with a hydroxyl group on a surface of porous silica glass and dehydrating the porous silica glass, and sintering the dehydrated porous silica glass and forming a transparent glass body.