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:
Aug. 20, 1991
Filed:
Feb. 22, 1990
Applicant:
Inventor:
Fumihiko Sato, Ootsu, JP;
Assignee:
Omron Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 46 ; 372 45 ; 357 17 ;
Abstract
A semiconductor laser includes a substrate (11) on which there are successively formed a first cladding layer (12), an active layer (13), a second cladding layer (14), an etching-stop layer (15) exhibiting little absorptivity with respect to light emitting by the active layer, and a third cladding layer (16). The third cladding layer is etched away down to the etching stop layer with the exception of a ridge portion of the third cladding layer.
Sato, Fumihiko. (1991). Ridge-waveguide semiconductor laser (U.S. Patent No. 5042045). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5042045
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile