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. 07, 2009
Filed:
Mar. 26, 2008
Applicant:
Taketomo Nakane, Tama, JP;
Inventor:
Taketomo Nakane, Tama, JP;
Assignee:
Mitsumi Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/035 (2006.01); G02B 6/12 (2006.01); G02B 6/26 (2006.01); G02B 6/28 (2006.01); G02B 6/34 (2006.01); G02B 6/42 (2006.01); G02B 6/02 (2006.01); G02B 6/10 (2006.01); G02B 6/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical waveguide device includes a lower cladding layer, a high refractive index region provided on the lower cladding layer, a pair of cores provided on the lower cladding layer on both sides of the high refractive index region, and an upper cladding layer provided on the high refractive index region and the pair of cores. One of the upper and lower cladding layers has a pair of band-shaped parts disposed between the high refractive index region and the pair of cores.
Nakane, Taketomo. (2009). Optical waveguide device (U.S. Patent No. 7558456). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7558456
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile