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:
May. 04, 1993
Filed:
Oct. 02, 1991
Wolfgang Thulke, Munich, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A monolithically integrated laser diode waveguide combination on a semi-insulating substrate has in an active region thereof a laser diode with a waveguide layer, an intermediate layer, an active layer, and a grating layer arranged between portions of a lower cover layer. Above this laser strip, an upper cover layer with a central contact layer is located thereupon together with a central contact. An activation of the active layer occurs via the lower cover layer, a lateral contact layer applied on the coating layer, and lateral contacts.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile