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:
Jul. 15, 2025
Filed:
Jul. 08, 2022
Denso Corporation, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Mirise Technologies Corporation, Nisshin, JP;
Qd Laser, Inc., Kawasaki, JP;
Yuki Kamata, Nisshin, JP;
Hiroyuki Tarumi, Nisshin, JP;
Koichi Oyama, Nisshin, JP;
Keizo Takemasa, Kawasaki, JP;
Kenichi Nishi, Kawasaki, JP;
Yutaka Ohnishi, Kawasaki, JP;
DENSO CORPORATION, Kariya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
MIRISE Technologies Corporation, Nisshin, JP;
QD LASER, Inc., Kawasaki, JP;
Abstract
An optical semiconductor device includes an active layer having a plurality of quantum dot layers. The plurality of quantum dot layers include: a first quantum dot layer doped with a p-type impurity; and a second quantum dot layer doped with an n-type impurity and having an emission wavelength different from that of the first quantum dot layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile