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. 01, 2014
Filed:
Jun. 30, 2008
Applicants:
Tomomi Ichinose, Kanagawa, JP;
Toru Achiwa, Kanagawa, JP;
Inventors:
Tomomi Ichinose, Kanagawa, JP;
Toru Achiwa, Kanagawa, JP;
Assignee:
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B 37/016 (2006.01); C03B 37/027 (2006.01); C03B 19/12 (2006.01); C03C 1/00 (2006.01);
U.S. Cl.
CPC ...
C03B 37/016 (2013.01); C03B 19/12 (2013.01); C03C 2203/26 (2013.01); C03C 1/006 (2013.01); C03C 2201/40 (2013.01); C03C 2201/42 (2013.01); C03B 37/027 (2013.01); C03B 2203/26 (2013.01);
Abstract
[Object] In manufacturing a GRIN lens by a sol-gel method, an operation for preparing a wet gel is facilitated and cracking in a base material during sintering and foaming during drawing are prevented. [Solution] The object is achieved by obtaining a GRIN lens by producing a wet gel from an alcohol solution containing a silicon alkoxide, a dopant alkoxide, and a boron alkoxide as the main ingredients, leaching the same, drying the same to form a dry gel, and sintering and drawing the same.