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:
Apr. 14, 2026
Filed:
Oct. 19, 2022
Applicant:
Sumitomo Bakelite Co., Ltd., Tokyo, JP;
Inventors:
Motoya Kaneta, Tokyo, JP;
Hirotake Imai, Tokyo, JP;
Assignee:
SUMITOMO BAKELITE CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01); B32B 27/08 (2006.01); G02B 6/13 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29D 11/00663 (2013.01); B29D 11/0073 (2013.01); B32B 27/08 (2013.01); G02B 6/13 (2013.01); B29K 2105/0002 (2013.01); B32B 2250/24 (2013.01); B32B 2250/40 (2013.01); B32B 2307/418 (2013.01); B32B 2551/00 (2013.01);
Abstract
The manufacturing method of an optical waveguide of the present invention includes a step of preparing a workpiece which includes a core layer including a core portion-forming region and has a sheet shape and a step of cutting out an optical waveguide from an inside of the core portion-forming region in the workpiece. The core layer satisfies all of the following requirements (a), (b), and (c).