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:
Jul. 11, 1989
Filed:
Dec. 09, 1987
Etsuji Omura, Itami, JP;
Hirofumi Namizaki, Itami, JP;
Abstract
A semiconductor laser includes a semiconductor substrate on which a first semiconductor layer forming a rectifying junction is disposed, a groove extending through the first layer and into the substrate, a first cladding layer disposed on the semiconductor substrate in the groove, an active layer provided on the first cladding layer in the groove, and a second cladding layer provided directly on the active layer and opposite the first semiconductor layer, with an interposed gap void of solid material or an interposed gap and a current blocking material having only negligible parasitic capacitance disposed at spaced locations in the gap.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile