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:
Nov. 23, 1999
Filed:
Apr. 25, 1997
Tatsuya Kunisato, Takatsuki, JP;
Takashi Kano, Ohtsu, JP;
Yasuhiro Ueda, Hirakata, JP;
Yasuhiko Matsushita, Osaka, JP;
Katsumi Yagi, Suita, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A light emitting device includes a cladding layer composed of a III-V group nitride system semiconductor of a first conductivity type, an active layer formed on the cladding layer of the first conductivity type and composed of a III-V group nitride system semiconductor containing In, an undoped cap layer formed on the active layer and composed of a III-V group nitride system semiconductor, and a cladding layer formed on the cap layer and composed of a III-V group nitride system semiconductor of a second conductivity type.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile