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. 27, 1991
Filed:
May. 15, 1990
Applicant:
Inventors:
Kenji Ikeda, Itami, JP;
Kimio Shigihara, Itami, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 45 ; 372 96 ; 372 49 ;
Abstract
A semiconductor laser device having a relative wide active region and a distributed Bragg reflector facet wherein a relative high reflectance region one third of the active region width is centrally disposed on a surface of the laser through which light is emitted.