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:
Oct. 09, 2012
Filed:
Oct. 19, 2006
Applicants:
Seishi Oida, Kyoto, JP;
Takahiro Nakano, Kyoto, JP;
Yoshito Miyahara, Nagano, JP;
Takashi Yoshie, Nagano, JP;
Harunobu Satou, Nagano, JP;
Kouichi Kadosaki, Nagano, JP;
Kazumitsu Seki, Nagano, JP;
Inventors:
Seishi Oida, Kyoto, JP;
Takahiro Nakano, Kyoto, JP;
Yoshito Miyahara, Nagano, JP;
Takashi Yoshie, Nagano, JP;
Harunobu Satou, Nagano, JP;
Kouichi Kadosaki, Nagano, JP;
Kazumitsu Seki, Nagano, JP;
Assignees:
Panasonic Corporation, Osaka, JP;
Shinko Electric Industries Co., Ltd., Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/495 (2006.01); H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lead frame base is coated with a four-layer plating. The four-layer plating includes an underlayer plating (Ni), a palladium plating, a silver plating and a gold plating arranged in this order from bottom to top.