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:
Jun. 20, 1989
Filed:
Aug. 11, 1988
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 46 ;
Abstract
A semiconductor laser device includes semiconductor layers including a semiconductor layer having a stripe groove having a reverse trapezoidal cross section and a bent active layer spaced from and in the configuration of the groove wherein the bottom width of the groove is less than 2 microns and the distance from the active layer to the bottom of the groove is more than 0.6 micron.