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. 09, 2011
Filed:
May. 30, 2008
Fumio Yamashita, Nara, JP;
Shigetoshi Ito, Shijonawate, JP;
Shuichiro Yamamoto, Tenri, JP;
Toshiyuki Kawakami, Mihara, JP;
Fumio Yamashita, Nara, JP;
Shigetoshi Ito, Shijonawate, JP;
Shuichiro Yamamoto, Tenri, JP;
Toshiyuki Kawakami, Mihara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a nitride semiconductor laser chip so structured as to suppress development of a step on nitride semiconductor layers, the substrate has the (1-100) plane as the principal plane, the resonator facet is perpendicular to the principal plane, and, in the cleavage surface forming the resonator facet, at least by one side of a stripe-shaped waveguide, an etched-in portion is formed as an etched-in region open toward the surface of the nitride semiconductor layers.