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:
Jan. 04, 2005
Filed:
Oct. 09, 2003
Applicants:
Shinichi Sonetaka, Ibaraki, JP;
Yasuyuki Toyoda, Mukou, JP;
Kazuhiro Arai, Imaichi, JP;
Yorito Ota, Kobe, JP;
Inventors:
Shinichi Sonetaka, Ibaraki, JP;
Yasuyuki Toyoda, Mukou, JP;
Kazuhiro Arai, Imaichi, JP;
Yorito Ota, Kobe, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 310328 ; H01L 310336 ; H01L 31072 ; H01L 31109 ;
U.S. Cl.
CPC ...
Abstract
A bipolar transistor includes the first group of transistors, the second group of transistors, the third group of transistorsand the fourth group of transistors. The groups of transistors have unit transistors with emitters, bases and collectors that are connected electrically in parallel and the number of unit transistors is different from group to group and 2, 4, 8, and 16, respectively.