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:
Aug. 23, 2005
Filed:
May. 14, 2002
Kazuhiro Omori, Kanagawa, JP;
Kazumi Naito, Chiba, JP;
Toshiya Kawasaki, Kanagawa, JP;
Kouichi Wada, Kanagawa, JP;
Kazuhiro Omori, Kanagawa, JP;
Kazumi Naito, Chiba, JP;
Toshiya Kawasaki, Kanagawa, JP;
Kouichi Wada, Kanagawa, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A niobium powder for a capacitor having a tapping density of 0.5 to 2.5 g/ml, and average particle size of 10 to 1000 μmum, angle of repose form 10° to 60°, the BET specific surface area from 0.5 to 40 m/g and a plurity of pore diameter peak tops in the pore distribution, and a producing method therof; (2) a niobium sintered body, which is obtained by sintering the above niobium powder and, having a plurality of pore diameter peak tops in a range of 0.01 μmum to 500 μmum, preferably, the peak tops of two peaks among the plurality of pore diameter peak tops having a highest relative intensity are present in the range of 0.2 to 0.7 μmum and in the range of 0.7 to 3 μmum, respectively, and a producing method thereof; (3) a capacitor using the above sintered body and a producing method thereof, and (4) an electronic circuit and electronic device using the above capacitor.