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:
Apr. 17, 2001
Filed:
Jun. 09, 1998
Efim L. Portnoi, 194223, St. Petersburg, RU;
Mikhail A. Kaliteevski, 198262, St. Petersburg, RU;
Olga G. Sheremet, 194064, St. Petersburg, RU;
Grigorii S. Sokolvskii, 194100 St. Petersburg, RU;
John McKillop, Saunderstown, RI (US);
Other;
Abstract
A laser cavity is defined by gratings which are selected to provide distributed feed back within the cavity oscillating at a predetermined wavelength. At least one of the gratings deflects a portion of the light wave at an angle to the plane of the active layer to provide surface emission of the laser beam. In order to enhance the output of the laser cavity a further grating is provided on the side of the active layer opposite to the first gratings.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile