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:
Dec. 13, 1988
Filed:
Mar. 04, 1987
Applicant:
Inventors:
Assignee:
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9612 ; 350 9611 ; 350 9615 ;
Abstract
In a demultiplexing and/or multiplexing optical circuit of the invention, a groove for arranging a filter in an optical waveguide is arranged to be perpendicular to a pair of parallel opposing sides of a substrate for constituting the optical circuit. A plurality of demultiplexer and/or multiplexer can be formed simultaneously, and a high machining precision can be obtained relatively easily.
Seki, Masafumi. (1988). Demultiplexing and/or multiplexing optical circuit (U.S. Patent No. 4790615). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4790615
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile