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:
Mar. 15, 2005
Filed:
Dec. 23, 2002
Applicants:
Toshiya Uemura, Tsushima, JP;
Shigemi Horiuchi, Nagoya, JP;
Inventors:
Toshiya Uemura, Tsushima, JP;
Shigemi Horiuchi, Nagoya, JP;
Assignee:
Toyoda Gosei Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10L021/00 ;
U.S. Cl.
CPC ...
Abstract
A transparent electrode film containing gold for covering the uppermost layer of a group III nitride semiconductor device has a first layer formed on the uppermost layer and not thicker than 15 Å, and a second layer formed on the first layer and containing gold. The first layer contains a first metal having an ionization potential lower than that of gold, and the second layer further contains a second metal having an ionization potential lower than that of gold.