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:
Oct. 23, 2012
Filed:
Jun. 21, 2011
Takashi Takahashi, Miyagi, JP;
Morimasa Kaminishi, Miyagi, JP;
Shunichi Sato, Miyagi, JP;
Akihiro Itoh, Miyagi, JP;
Naoto Jikutani, Miyagi, JP;
Takashi Takahashi, Miyagi, JP;
Morimasa Kaminishi, Miyagi, JP;
Shunichi Sato, Miyagi, JP;
Akihiro Itoh, Miyagi, JP;
Naoto Jikutani, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A semiconductor light-emitting device has a semiconductor layer containing Al between a substrate and an active layer containing nitrogen, wherein Al and oxygen are removed from a growth chamber before growing said active layer and a concentration of oxygen incorporated into said active layer together with Al is set to a level such that said semiconductor light-emitting device can perform a continuous laser oscillation at room temperature.