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:
Feb. 08, 2011
Filed:
Mar. 31, 2009
Yasuto Miyake, Hirakata, JP;
Ryoji Hiroyama, Kyo-tanabe, JP;
Masayuki Hata, Kadoma, JP;
Yasumitsu Kuno, Hirakata, JP;
Yasuto Miyake, Hirakata, JP;
Ryoji Hiroyama, Kyo-tanabe, JP;
Masayuki Hata, Kadoma, JP;
Yasumitsu Kuno, Hirakata, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A nitride-based semiconductor laser device includes a nitride-based semiconductor layer formed on a main surface of a substrate and having an emission layer, wherein the nitride-based semiconductor layer includes a first side surface formed by a (000-1) plane and a second side surface inclined with respect to the first side surface, and a ridge having an optical waveguide extending perpendicular to a [0001] direction in an in-plane direction of the main surface of the substrate is formed by a region held between the first side surface and the second side surface.