Patents by Inventor Barry Muffoletto
Barry Muffoletto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7727372Abstract: 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.Type: GrantFiled: December 5, 2005Date of Patent: June 1, 2010Assignee: Greatbatch Ltd.Inventors: Yanming Liu, Neal Nesselbeck, David Goad, Barry Muffoletto
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Patent number: 7410509Abstract: A capacitor is described. the capacitor includes a casing; a cathode of an active material of at least an oxide of a first metal provided on a substrate, wherein the active material is characterized as being of a substantially homogeneous coating formed by sputtering a target of the first metal in a vacuum chamber; an anode spaced from the cathode coating; and an electrolyte in contact with the cathode coating and the anode. The casing contains the anode, the cathode and the electrolyte. A method and apparatus for providing the sputtered coating is also disclosed.Type: GrantFiled: January 16, 2006Date of Patent: August 12, 2008Assignee: Greatbatch Ltd.Inventors: Doug Eberhard, Barry Muffoletto, Wolfram Neff
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Publication number: 20080151474Abstract: A capacitor comprising a casing of first and second casing members, a feedthrough electrically insulated from the casing and extending there from, first and second anodes electrically connected to each other within the casing, a cathode, and an electrolyte. The casing comprises first and second casing members, the first casing member having a first face wall joined to a surrounding side wall, and the second member having a second face wall, wherein the first and second casing members are secured together.Type: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Applicant: Greatbatch, Ltd.Inventors: Chris Ziarniak, Rodney Stringham, Barry Muffoletto, Doug Eberhard, Joseph Spaulding, Yanming Liu, Donald Monroe, Edward J. Gloss, Laurie O'Connor, Eric Ziarniak, William Elliott, Eric Stemen, Troy Lindke
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Publication number: 20080013257Abstract: An anode for an electrolytic capacitor is described. The anode is of a valve metal in powdered form, for example tantalum powder, that has been pressed into a pellet and sintered under a vacuum at high temperatures. Preferably, a poly(alkylene)carbonate binder is used to promote cohesion with the pressed powder body. The binder adds green strength to the pressed body and helps with powder flow before pressing. The poly(alkylene)carbonate binders are superior in that they leave virtually no residual carbon behind when burnt out during the sintering process. The pressed valve metal powder structure is then anodized to a desired voltage in a formation electrolyte to form a continuous dielectric oxide film on the sintered body as well as a terminal lead/anode lead weld extending therefrom.Type: ApplicationFiled: July 17, 2007Publication date: January 17, 2008Applicant: Greatbatch Ltd.Inventors: Keith Seitz, Ashish Shah, Barry Muffoletto, Wolfram Neff, Douglas Eberhard
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Publication number: 20080007894Abstract: An anode for an electrolytic capacitor is described. The anode is of a valve metal in powdered form, for example tantalum powder, that has been pressed into a pellet and sintered under a vacuum at high temperatures. Preferably, a poly(alkylene) carbonate binder is used to promote cohesion with the pressed powder body. The binder adds green strength to the pressed body and helps with powder flow before pressing. The poly(alkylene) carbonate binders are superior in that they leave virtually no residual carbon behind when burnt out during the sintering process. The pressed valve metal powder structure is then anodized to a desired voltage in a formation electrolyte to form a continuous dielectric oxide film on the sintered body as well as a terminal lead/anode lead weld extending therefrom.Type: ApplicationFiled: July 17, 2007Publication date: January 10, 2008Applicant: Greatbatch Ltd.Inventors: Keith Seitz, Ashish Shah, Barry Muffoletto, Wolfram Neff, Douglas Eberhard
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Patent number: 7286336Abstract: An oxygen plasma process for treating a dielectric oxide layer, particularly an anodic oxide, subsequent to its incorporation into an electrolytic capacitor is described. The present treatment reduces DC leakage and improves shelf life stability of the resulting capacitor in comparison to anodic oxides treated in a conventional manner. This is important for critical applications such as implantable cardioverter defibrillators where capacitor charging time and charge/discharge energy efficiency are critical.Type: GrantFiled: May 13, 2005Date of Patent: October 23, 2007Assignee: Greatbatch Ltd.Inventors: Yanming Liu, Barry Muffoletto, David Goad
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Patent number: 7271994Abstract: An electrical energy storage device such as a wet tantalum electrolytic capacitor or an electrochemical cell such as a lithium/silver vanadium oxide cell is described. The enclosure comprises a drawn casing portion having a planar face wall supporting a surrounding sidewall and is shaped to nest the anode, cathode and intermediate separator components. A mating cover is a stamped planar piece of similar material having a periphery edge welded to the edge of the casing portion surrounding sidewall. In order to prevent heat generated during the welding process from damaging the separator, the anode portion adjacent to the weld site is contoured. This provides sufficient space between the weld and the separator supported on the anode at the contour so that what heat is transmitted to the separator by convection and conduction mechanism will not damage the separator.Type: GrantFiled: June 7, 2006Date of Patent: September 18, 2007Assignee: Greatbatch Ltd.Inventors: Eric Stemen, Troy Lindke, Edward Gloss, Rodney Stringham, Neal Nesselbeck, Joseph Spaulding, Barry Muffoletto, Doug Eberhard
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Patent number: 7244279Abstract: Deposition of a metal-containing reagent solution or suspension onto a conductive substrate by various pad-printing techniques is described. The result in a pseudocapacitive oxide coating, nitride coating, carbon nitride coating, or carbide coating having an acceptable surface area for incorporation into an electrolytic capacitor, such as one have a tantalum anode.Type: GrantFiled: December 21, 2005Date of Patent: July 17, 2007Assignee: Greatbatch Ltd.Inventors: Keith Seitz, Ashish Shah, Barry Muffoletto, Wolfram Neff, Douglas Eberhard
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Publication number: 20060279906Abstract: An electrical energy storage device such as a wet tantalum electrolytic capacitor or an electrochemical cell such as a lithium/silver vanadium oxide cell is described. The enclosure comprises a drawn casing portion having a planar face wall supporting a surrounding sidewall and is shaped to nest the anode, cathode and intermediate separator components. A mating cover is a stamped planar piece of similar material having a periphery edge welded to the edge of the casing portion surrounding sidewall. In order to prevent heat generated during the welding process from damaging the separator, the anode portion adjacent to the weld site is contoured. This provides sufficient space between the weld and the separator supported on the anode at the contour so that what heat is transmitted to the separator by convection and conduction mechanism will not damage the separator.Type: ApplicationFiled: June 7, 2006Publication date: December 14, 2006Inventors: Eric Stemen, Troy Lindke, Edward Gloss, Rodney Stringham, Neal Nesselbeck, Joseph Spaulding, Barry Muffoletto, Doug Eberhard
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Patent number: 7116547Abstract: Deposition of a metal-containing reagent solution or suspension onto a conductive substrate by various pad-printing techniques is described. This results in a pseudocapacitive oxide coating, nitride coating, carbon nitride coating, or carbide coating having an acceptable surface area for incorporation into an electrolytic capacitor, such as one having a tantalum anode.Type: GrantFiled: August 18, 2004Date of Patent: October 3, 2006Assignee: Wilson Greatbatch Technologies, Inc.Inventors: Keith Seitz, Ashish Shah, Barry Muffoletto, Wolfram Neff, Douglas Eberhard
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Publication number: 20060196774Abstract: 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.Type: ApplicationFiled: December 5, 2005Publication date: September 7, 2006Applicant: GREATBATCH, INC.Inventors: Yanming Liu, Neal Nesselbeck, David Goad, Barry Muffoletto
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Publication number: 20060198081Abstract: Deposition of a metal-containing reagent solution or suspension onto a conductive substrate by various pad-printing techniques is described. The result in a pseudocapacitive oxide coating, nitride coating, carbon nitride coating, or carbide coating having an acceptable surface area for incorporation into an electrolytic capacitor, such as one have a tantalum anode.Type: ApplicationFiled: December 21, 2005Publication date: September 7, 2006Applicant: WILSON GREATBATCH TECHNOLOGIES, INC.Inventors: Keith Seitz, Ashish Shah, Barry Muffoletto, Wolfram Neff, Douglas Eberhard
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Publication number: 20060198082Abstract: A capacitor comprised of a casing; a cathode comprising an active material of at least an oxide of a first metal provided on a substrate, wherein the active material is characterized as comprising a substantially homogeneous coating formed by sputtering a target comprised of the first metal in a vacuum chamber; an anode spaced from the cathode coating; and an electrolyte in contact with the cathode coating and the anode, the casing containing the anode, the cathode and the electrolyte. A method and apparatus for providing the sputtered coating is also disclosed.Type: ApplicationFiled: January 16, 2006Publication date: September 7, 2006Applicant: GREATBATCH, INC.Inventors: Doug Eberhard, Barry Muffoletto, Wolfram Neff
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Publication number: 20060191796Abstract: The present invention is directed to a method for anodizing valve metal structures to a target formation voltage with a controlled power source.Type: ApplicationFiled: December 1, 2005Publication date: August 31, 2006Applicant: Greatbatch, Inc.Inventors: Barry Muffoletto, David Goad, Neal Nesselbeck, Ashish Shah, Joseph Spaulding, Monica Kaforey, Christina Scheuer, Yanming Liu
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Patent number: 7092242Abstract: An electrolytic capacitor comprising a plurality of polymeric structures molded about the periphery of the anode pellet is described. The polymeric structures contact between a weld strap surrounding the butt seam between mating “clamshell” casing portions and the anode pellet sidewall. That way, the anode pellet is restrained from moving along both an x- and y-axes inside the casing. Having the cathode active material contacting the opposed major casing sidewalls being in a closely spaced relationship with the anode pellet through an intermediate separator prevents movement along the z-axis. The resulting capacitor is particularly well suited for use in high shock and vibration conditions.Type: GrantFiled: September 8, 2005Date of Patent: August 15, 2006Assignee: Greatbatch, Inc.Inventors: Edward Gloss, Rodney Stringham, J. Michael Druding, Barry Muffoletto
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Patent number: 7085126Abstract: A polymeric cradle molded about the periphery of an anode pellet in an electrolytic capacitor is described. The polymeric cradle contacts between a welding strap surrounding the butt seam between mating “clam shell” casing portions and the anode pellet sidewall. This prevents the anode pellet from moving along both an x- and y-axes. Having the cathode active material contacting the opposed major casing sidewalls being in a closely spaced relationship with the anode pellet through an intermediate separator prevents movement along the z-axis. The resulting capacitor is particularly well suited for use in high shock and vibration conditions.Type: GrantFiled: March 1, 2005Date of Patent: August 1, 2006Assignee: Wilson Greatbatch Technologies, Inc.Inventors: Barry Muffoletto, Laurie O'Connor
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Publication number: 20060154416Abstract: Deposition of a metal-containing reagent solution or suspension or a carbon nanotube-containing suspension onto a conductive substrate by various pad-printing techniques is described. In the case of a metal-containing solution or suspension, a pseudocapacitive oxide coating, nitride coating, carbon nitride coating, carbide coating, or carbon nanotube coating results. In any event, the active coating has acceptable surface area for incorporation into an electrolytic capacitor, such as one having a tantalum anode.Type: ApplicationFiled: March 3, 2006Publication date: July 13, 2006Inventors: Keith Seitz, Ashish Shah, Barry Muffoletto, Wolfram Neff, Douglas Eberhard, Jason Hahl
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Patent number: 7072171Abstract: A capacitor having a cylindrical shape or configuration so that it is capable of being inserted directly into the vasculature of a patient is described. A typical diameter for the present capacitor is about 6 mm. A capacitor of this size would occupy about 9% of the total cross-sectional area of the inferior vena cava prior to the crossover to the heart, where the typical diameter of the vein is about 20 mm. The crossover section has a diameter of about 11 mm to about 12 mm.Type: GrantFiled: February 13, 2006Date of Patent: July 4, 2006Assignee: Wilson Greatbatch Technologies, Inc.Inventors: Barry Muffoletto, Rodney Stringham, Doug Eberhard, Joseph Spaulding, Yanming Liu, Don Monroe, Chris Ziarniac, Eric Ziarniac, Edward Gloss, Laurie O'Connor, William Elliott, Eric Stemen, Troy Lindke, Jason Hahl, Keith Seitz, Anthony Perez, Ken Talamine, J. Michael Druding
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Patent number: 7038901Abstract: A capacitor working electrolyte containing water and a silicate additive is described. The silicate additive does not alter the electrolyte properties and/or cause any separation of the electrolyte composition. Instead, it stabilizes capacitor long-term performance.Type: GrantFiled: February 11, 2005Date of Patent: May 2, 2006Assignee: Wilson Greatbatch Technologies, Inc.Inventors: Barry Muffoletto, Yanming Liu
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Patent number: 7012799Abstract: An enclosure for an electrical energy storage device such as a wet tantalum electrolytic capacitor or an electrochemical cell such as a lithium/silver vanadium oxide cell is described. The enclosure comprises two metallic casing components or portions. The first is a drawn member having a planar face wall supporting a surrounding sidewall and is shaped to nest the anode, cathode and intermediate separator components. The surrounding sidewall has an annular flange at its outer periphery. A mating cover is a stamped planar piece of similar material whose periphery fits inside the annular flange or rim as a complementary piece.Type: GrantFiled: April 19, 2005Date of Patent: March 14, 2006Assignee: Wilson Greatbatch Technologies, Inc.Inventors: Barry Muffoletto, Edward J. Gloss, Douglas Eberhard, Joseph Spaulding, Yanming Liu, Neal Nesselbeck, Louis Marinaccio, Eric Stemen, Rodney Stringham