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. 25, 2026
Filed:
Dec. 06, 2022
Nichia Corporation, Anan, JP;
Tomonori Morizumi, Anan, JP;
Teruyuki Morito, Anan, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A nitride semiconductor laser element includes a nitride semiconductor stack body and a protective film. The nitride semiconductor stack body includes first and second nitride semiconductor layers and an active layer disposed between the first nitride semiconductor layer and the second nitride semiconductor layer. The nitride semiconductor stack body defines a light-emission-side end face intersecting a face of the active layer on a second nitride semiconductor layer side, and a light-reflection-side end face intersecting the face of the active layer on the second nitride semiconductor layer side. The protective film is disposed on the light-emission-side end face of the nitride semiconductor stack body. The protective film includes, in the order from the light-emission-side end face, a first film that is a crystalline film containing oxygen and aluminum and/or gallium, a second film that is a nitride crystalline film, and a third film containing aluminum and oxygen.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile