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:
Apr. 08, 2008
Filed:
Mar. 15, 2005
Applicant:
Atsunori Mochida, Osaka, JP;
Inventor:
Atsunori Mochida, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor laser device includes a MQW active layer, a p-type cladding layer formed on the MQW active layer, having a ridge portion and having a smaller refractive index than that of the MQW active layer, a plurality of dielectric films formed at least on part of the p-type cladding layer extending from each side of the ridge portion.