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:
Jan. 27, 2004
Filed:
May. 23, 2001
Applicant:
Inventors:
Yuko Seki, Tokyo, JP;
Yutaka Urino, Tokyo, JP;
Akio Furukawa, Tokyo, JP;
Tadahiko Hanada, Tokyo, JP;
Naoki Ofusa, Tokyo, JP;
Shigeru Yoneda, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/26 ; G02B 6/42 ;
U.S. Cl.
CPC ...
G02B 6/26 ; G02B 6/42 ;
Abstract
A waveguide optical switch has a waveguide whose refractive index changes can be controlled by an electro-optic effect and an UV guide waveguide for coupling an ultraviolet radiation to the waveguide. A portion of the waveguide and a portion of the UV guide waveguide make up a directional coupler.
Seki, Yuko. (2004). Optical waveguide device to be optically poled, method of manufacturing optical waveguide device to be optically poled, and method of optically poling optical waveguide device (U.S. Patent No. 6684013). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6684013
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile