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:
May. 15, 2012
Filed:
Feb. 28, 2011
Applicants:
Yoichi Mugino, Kyoto, JP;
Tsuguki Noma, Kyoto, JP;
Minoru Akutsu, Kyoto, JP;
Koji Shimazawa, Tokyo, JP;
Inventors:
Yoichi Mugino, Kyoto, JP;
Tsuguki Noma, Kyoto, JP;
Minoru Akutsu, Kyoto, JP;
Koji Shimazawa, Tokyo, JP;
Assignees:
Rohm Co., Ltd., Kyoto, JP;
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A thermally assisted magnetic head includes a slider and a light source unit. The light source unit includes a semiconductor laser diode. The semiconductor laser diode includes an n-type (AlGa)InP cladding layer, a p-type (AlGa)InP cladding layer, an n-side AlGaAs guide layer placed between these cladding layers, a p-side AlGaAs guide layer placed between these cladding layers, and an active layer placed between these guide layers.