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:
Feb. 26, 2002
Filed:
Aug. 31, 1999
Applicant:
Inventor:
Yasutaka Sakata, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/100 ; H01S 5/00 ;
U.S. Cl.
CPC ...
H01L 2/100 ; H01S 5/00 ;
Abstract
In an optical semiconductor device including a semiconductor substrate, an active layer formed on the semiconductor substrate, a pnpn-type current blocking layer formed on a side of the active layer, and a carrier recombination layer on the semiconductor substrate on the side of the active layer, a structure of the active layer is different from a structure of the carrier recombination layer.
Sakata, Yasutaka. (2002). Optical semiconductor device having active layer and carrier recombination layer different from each other (U.S. Patent No. 6350629). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6350629
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile