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:
May. 22, 2018
Filed:
Sep. 30, 2015
Applicant:
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Inventors:
Yoshizumi Ishikawa, Tokyo, JP;
Youichi Hosokawa, Tokyo, JP;
Masayuki Motoya, Tokyo, JP;
Satoshi Oikawa, Tokyo, JP;
Assignee:
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/03 (2006.01); G02F 1/035 (2006.01); G02F 1/065 (2006.01); G02F 1/01 (2006.01); G02F 1/313 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0316 (2013.01); G02F 1/01 (2013.01); G02F 1/0356 (2013.01); G02F 1/065 (2013.01); G02F 1/313 (2013.01); G02F 2201/46 (2013.01); G02F 2202/20 (2013.01);
Abstract
An optical device is provided, which includes: an optical waveguide provided in a substrate having an electro-optic effect; a signal electrode provided on the substrate and above the optical waveguide; and a peeling prevention film which is provided on at least a part of an outer peripheral portion of the substrate and at a position spaced apart from the signal electrode, and also serves as a ground electrode.