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. 27, 1988
Filed:
Mar. 05, 1985
Applicant:
Inventors:
Toshihiro Fujita, Toyonaka, JP;
Jun Ohya, Neyagawa, JP;
Kenichi Matsuda, Moriguchi, JP;
Hiroyuki Serizawa, Hirakata, JP;
Assignee:
Matsushita Electric Inductrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 372 45 ; 372 92 ; 372 96 ;
Abstract
A semiconductor laser device of a new monolithic structure has a long transparent optical waveguide used as a passive cavity directly coupled with an active cavity possessing a gain in the direction of the optical axis of the active cavity on a compound semiconductor substrate. The device is intended to satisfy all four characteristics, which are;
Fujita, Toshihiro. (1988). Semiconductor laser device (U.S. Patent No. 4794608). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4794608
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile