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. 31, 1995
Filed:
May. 10, 1993
Applicant:
Inventors:
Yuji Ohkura, Itami, JP;
Masatoshi Fujiwara, Itami, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 96 ; 372 32 ;
Abstract
A single wavelength oscillating semiconductor laser device having at least two diffraction gratings in an active region in which the order of a first diffraction grating disposed in the center of the laser is higher than that of a second diffraction grating disposed in the neighborhood of resonator facets.
Ohkura, Yuji. (1995). Semiconductor laser including periodic structures with different periods (U.S. Patent No. 5386433). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5386433
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile