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. 31, 2010
Filed:
Feb. 28, 2007
Applicants:
Tsutomu Ukai, Hyogo, JP;
Masaya Mannoh, Hyogo, JP;
Inventors:
Tsutomu Ukai, Hyogo, JP;
Masaya Mannoh, Hyogo, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a constitution where a first clad layer is formed on a semiconductor substrate, an active layer having the strained multiple quantum well structure is formed on the first clad layer, and a second clad layer is formed on the active layer, the sum of products of strain amounts and film thickness in the active layer is set to a negative value.