Electricity: electrical systems and devices – Electrolytic systems or devices – Solid electrolytic capacitor
Reexamination Certificate
2006-02-10
2008-03-11
Ha, Nguyen T. (Department: 2831)
Electricity: electrical systems and devices
Electrolytic systems or devices
Solid electrolytic capacitor
C361S516000, C361S519000, C361S523000, C361S528000, C361S530000
Reexamination Certificate
active
07342773
ABSTRACT:
A capacitor comprising an aluminum anode and a dielectric layer comprising phosphate doped aluminum oxide and process for making the capacitor. Furthermore, the capacitor is formed by the process of: forming an aluminum plate; pre-hydrating the aluminum; contacting the plate with an anodizing solution comprising glycerine, 0.1 to 1.0%, by weight, water and 0.01 to 0.5%, by weight, orthophosphate; applying a voltage to the aluminum plate and determining an initial current; maintaining the first voltage until a first measured current is no more than 50% of the initial current; increasing the voltage and redetermining the initial current; maintaining the increased voltage until a second measured current is no more than 50% of the redetermined initial current, and continuing the increasing of the voltage and maintaining the increased voltage until a final voltage is achieved.
REFERENCES:
patent: 1710073 (1929-04-01), Ruben
patent: 1891207 (1932-12-01), Ruben
patent: 2826724 (1958-03-01), Lilienfed
patent: 3733291 (1973-05-01), Alwitt et al.
patent: 4113579 (1978-09-01), Randall et al.
patent: 4252575 (1981-02-01), Bernard
patent: 4481084 (1984-11-01), Chen et al.
patent: 4582574 (1986-04-01), Nguyen et al.
patent: 5674371 (1997-10-01), Patel
patent: 5837121 (1998-11-01), Kinard et al.
patent: 5926357 (1999-07-01), Elias et al.
patent: 5935408 (1999-08-01), Kinard et al.
patent: 6149793 (2000-11-01), Melody et al.
patent: 6231993 (2001-05-01), Stephenson et al.
patent: 6235181 (2001-05-01), Kinard et al.
patent: 6267861 (2001-07-01), Kinard et al.
patent: 6346185 (2002-02-01), Kinard et al.
patent: 6409905 (2002-06-01), Melody et al.
patent: 6436268 (2002-08-01), Melody et al.
patent: 6459565 (2002-10-01), Lessner et al.
patent: 6808615 (2004-10-01), Lessner et al.
patent: 2004/0188269 (2004-09-01), Harrington et al.
International Search Report, PCT/US2004/008037, Jul. 26, 2004, Lescop.
Harrington Albert Kennedy
Kinard John Tony
Melody Brian John
Stenzinger Duane Earl
Wheeler David Alexander
Guy Joseph T.
Ha Nguyen T.
Kemet Electronics Corporation
Nexsen Pruet, Inc.
LandOfFree
Capacitor containing aluminum anode foil anodized in low... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Capacitor containing aluminum anode foil anodized in low..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitor containing aluminum anode foil anodized in low... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3969695