Anodizing valve metals by self-adjusted current and power

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7727372
APP PUB NO 20060196774A1
SERIAL NO

11164751

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for anodizing valve metal structures to a target formation voltage is described. The valve metal structures are placed in an anodizing electrolyte and connected to a power supply that generates a source voltage to at least one current limiting device. If at least two current limiting devices are used, they are in series with the valve metal structures with the one current limiting device connected to at least one structure. The valve metal structures are then subjected to a current that decreases over time, a formation voltage that increases over time to a level below the voltage from the power supply and a power level that is self-adjusted to a level that decreases excessive heating in the structure. The invention also includes the components for the method.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GREATBATCH LTD.CLARENCE, NY584

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goad, David Buffalo, US 8 70
Liu, Yanming Clarence Center, US 51 770
Muffoletto, Barry Alden, US 22 282
Nesselbeck, Neal Lockport, US 8 131

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MITSUBISHI CHEMICAL CORPORATION (1)
6368485 Forming electrolyte for forming metal oxide coating film 48 2000
 
GREATBATCH LTD. (1)
* 6231993 Anodized tantalum pellet for an electrolytic capacitor 30 1999
 
ALCAN INTERNATIONAL LIMITED (1)
4859288 Porous anodic aluminum oxide films 18 1988
 
WHATMAN INTERNATIONAL LIMITED (1)
4687551 Porous films and method of forming them 21 1985
 
International Hardcoat, Inc. (1)
4839002 Method and capacitive discharge apparatus for aluminum anodizing 20 1987
 
The United States of America as represented by the Secretary of the Air Force (1)
4936957 Thin film oxide dielectric structure and method 23 1988
 
MEDTRONIC, INC. (1)
6802951 Methods of anodizing valve metal anodes 25 2002
 
KEMET ELECTRONICS CORPORATION (2)
5837121 Method for anodizing valve metals 19 1997
6267861 Method of anodizing valve metals 12 2000
 
ALTA GROUP, INC., THE (2)
5185075 Surface treated titanium/titanium alloy articles and process for producing 27 1990
5211832 Process for producing electrically impervious anodized films on valve metals and product thereof 12 1992
 
CANON KABUSHIKI KAISHA (1)
* 5503730 Method for anodic oxidation 5 1995
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
ACCENTUS MEDICAL LIMITED (2)
* 9096943 Metal treatment 0 2010
* 2012/0018,308 Metal Treatment 0 2010
 
GREATBATCH LTD. (2)
9312075 High voltage tantalum anode and method of manufacture 0 2014
9633796 High voltage tantalum anode and method of manufacture 0 2016
 
AVX CORPORATION (5)
8605411 Abrasive blasted conductive polymer cathode for use in a wet electrolytic capacitor 3 2010
8514547 Volumetrically efficient wet electrolytic capacitor 11 2010
8259435 Hermetically sealed wet electrolytic capacitor 2 2010
9275799 Wet electrolytic capacitor containing an improved anode 0 2012
9384901 Wet electrolytic capacitor for use at high temperatures 0 2014
* Cited By Examiner

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