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:
Oct. 27, 1998
Filed:
Dec. 26, 1996
Applicant:
Inventor:
Geoffrey Duggan, Oxfordshire, GB;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 45 ;
Abstract
A semiconductor laser device includes an active region, a cladding region, and a carrier blocking layer of the same conductivity type as the cladding region disposed on tho same side of the active region as the cladding region. The carrier, blocking layer has a greater impurity concentration than the cladding region.
Duggan, Geoffrey. (1998). Semiconductor laser device and a method of growing a semiconductor laser (U.S. Patent No. 5828685). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5828685
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