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:
Jan. 21, 2014
Filed:
Dec. 01, 2009
Applicant:
Toshiaki Igarashi, Kanagawa, JP;
Inventor:
Toshiaki Igarashi, Kanagawa, JP;
Assignee:
Renesas Electronics Corporation, Kawasaki-Shi, Kanagawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A laser diode has a plurality of structures, each of which having a function of scattering, absorbing or reflecting stray light, disposed in a region along an optical waveguide, wherein at least one of said structures is formed in each divided region obtained by equally dividing said region along said optical waveguide into three or more parts in the longitudinal direction of said optical waveguide.