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:
Feb. 18, 2003
Filed:
Apr. 10, 2000
Applicant:
Inventors:
Assignee:
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/035 ; G02F 1/295 ;
U.S. Cl.
CPC ...
G02F 1/035 ; G02F 1/295 ;
Abstract
An optical waveguide modulator has a substrate made of a material with an electrooptic effect, an optical waveguide to guide a lightwave a travelling wave-type signal electrode and the ground electrodes to control the lightwave. Moreover, it has a buffer layer at least a part thereof being embedded in the superficial layer of the substrate having a larger width “W” than a width “&ohgr;” of the travelling wave-type signal electrode only under the signal electrode and its nearby part.
Sugamata, Tohru. (2003). Light modulator of waveguide type (U.S. Patent No. 6522792). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6522792
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile