Electricity: electrical systems and devices – Electrolytic systems or devices – Coulometer
Reexamination Certificate
2005-08-23
2005-08-23
Dinkins, Anthony (Department: 2831)
Electricity: electrical systems and devices
Electrolytic systems or devices
Coulometer
C361S502000, C361S508000, C361S509000, C361S516000, C361S524000, C361S321100, C075S255000, C075S343000, C075S346000
Reexamination Certificate
active
06934146
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 m2/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.
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Kawasaki Toshiya
Naito Kazumi
Omori Kazuhiro
Wada Kouichi
Dinkins Anthony
Ha Nguyen T.
Showa Denko K.K.
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