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:
Apr. 06, 1993
Filed:
Apr. 04, 1991
Applicant:
Inventors:
Seiji Nishiwaki, Katano, JP;
Yoshinao Taketomi, Moriguchi, JP;
Shinji Uchida, Osaka, JP;
Takaaki Tomita, Moriguchi, JP;
Junichi Asada, Ibaraki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
369 4412 ; 369112 ; 2502015 ; 359569 ; 385 14 ; 385 37 ;
Nishiwaki, Seiji. (1993). Optical head apparatus including a waveguide layer with concentric or (U.S. Patent No. 5200939). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5200939
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile