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. 11, 1989
Filed:
Oct. 07, 1988
Applicant:
Inventors:
Hideaki Okayama, Tokyo, JP;
Akio Matoba, Tokyo, JP;
Nobuo Kobayashi, Tokyo, JP;
Issei Asabayashi, Tokyo, JP;
Kiyoshi Nagai, Tokyo, JP;
Ryoko Shibuya, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G12B / ;
U.S. Cl.
CPC ...
350 9615 ; 350 9612 ;
Abstract
An optical switch matrix for selecting an optical propagation route between input ports and output ports by electric control. A first directional coupler is disposed on the input port side of a crosspoint of the matrix. A second directional coupler is disposed on the output port side of the crosspoint. A corner reflector is formed at a joint of the first and second directional coupler.
Okayama, Hideaki. (1989). Optical switch matrix (U.S. Patent No. 4846542). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4846542
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile