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. 05, 1977
Filed:
Mar. 30, 1976
Kunio Itoh, Takatsuki, JA;
Morio Inoue, Takatsuki, JA;
Matsushita Electronics Corporation, Kadoma, JA;
Abstract
Double-hetero-structure injection laser can be improved to have low threshold current in room-temperature continuous-wave operation. The improvement is obtained in one case wherein an n-type Ga.sub.1.sub.-y Al.sub.y As region (1.gtoreq.y>0) is first formed, a Ga.sub.1.sub.-z In.sub.z As is grown thereon as an active region and a p-type Ga.sub.1.sub.-y Al.sub.y As region is then formed on the active region and the value of z is so selected as to make the lattice constants of the active region smaller than those of the first and third regions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile