Patents by Inventor Randolph S. Hahn

Randolph S. Hahn 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).

  • Patent number: 11361908
    Abstract: An improved method of forming a capacitor, and capacitor formed thereby, is described. The method comprises forming an anode with an anode lead extending therefrom, forming a dielectric on the anode, forming a solid cathode layer on the dielectric and forming a hermetic encasement on the capacitor wherein the hermetic encasement comprises a conformal non-conductive layer.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: June 14, 2022
    Assignee: KEMET Electronics Corporation
    Inventors: Antony Chacko, Randolph S. Hahn, David Jacobs, Brandon Summey
  • Publication number: 20210057167
    Abstract: An improved method of forming a capacitor, and capacitor formed thereby, is described. The method comprises forming an anode with an anode lead extending therefrom, forming a dielectric on the anode, forming a solid cathode layer on the dielectric and forming a hermetic encasement on the capacitor wherein the hermetic encasement comprises a conformal non-conductive layer.
    Type: Application
    Filed: November 5, 2020
    Publication date: February 25, 2021
    Inventors: Antony Chacko, Randolph S. Hahn, David Jacobs, Brandon Summey
  • Patent number: 10861652
    Abstract: An improved method of forming a capacitor, and capacitor formed thereby, is described. The method comprises forming an anode with an anode lead extending therefrom, forming a dielectric on the anode, forming a solid cathode layer on the dielectric and forming a hermetic encasement on the capacitor wherein the hermetic encasement comprises a conformal non-conductive layer.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: December 8, 2020
    Assignee: KEMET Electronics Corporation
    Inventors: Antony Chacko, Randolph S. Hahn, David Jacobs, Brandon Summey
  • Patent number: 10403443
    Abstract: A solid electrolytic capacitor and method for forming a solid electrolytic capacitor with high temperature leakage stability is described. The solid electrolytic capacitor has improved leakage current and is especially well suited for high temperature environments such as down-hole applications.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: September 3, 2019
    Assignee: KEMET Electronics Corporation
    Inventors: Antony P. Chacko, Randolph S. Hahn, Pablo Antonio Ruiz
  • Publication number: 20180211790
    Abstract: An improved capacitor is provided wherein the improved capacitor has improved ESR. The capacitor has a fluted anode and an anode wire extending from the fluted anode. A dielectric is on the fluted anode. A conformal cathode is on the dielectric and a plated metal layer is on the carbon layer.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 26, 2018
    Inventors: Randolph S. Hahn, Jeffrey Poltorak, Brandon Summey, Antony P. Chacko, John T. Kinard, Philip M. Lessner
  • Patent number: 9959979
    Abstract: An improved capacitor is provided wherein the improved capacitor has improved ESR. The capacitor has a fluted anode and an anode wire extending from the fluted anode. A dielectric is on the fluted anode. A conformal cathode is on the dielectric and a plated metal layer is on the carbon layer.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: May 1, 2018
    Assignee: KEMET Electronics Corporation
    Inventors: Randolph S. Hahn, Jeffrey Poltorak, Brandon Summey, Antony P. Chacko, John T. Kinard, Philip M. Lessner
  • Patent number: 9761347
    Abstract: A method for forming a capacitor, a capacitor formed thereby and an improved composition for a conductive coating are described. The method includes providing an anode, forming a dielectric on the anode and forming a cathode layer over the dielectric by applying an amine, a weak acid and a conductive polymer.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: September 12, 2017
    Assignee: KEMET Electronics Corporation
    Inventors: Yaru Shi, Antony P. Chacko, Hong Zhang, Qingping Chen, Randolph S. Hahn, Lei Xu, Yang Jin, Zhen Wu
  • Patent number: 9748043
    Abstract: A solid electrolytic capacitor is described which comprises an anode, a dielectric on the anode and a cathode on the dielectric. A conductive coating is on the cathode wherein the conductive layer comprises an exterior surface of a first high melting point metal. An adjacent layer is provided comprising a second high melting point metal, wherein the first high melting point metal and the second high melting point metal are metallurgically bonded with a low melting point metal.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: August 29, 2017
    Assignee: KEMET Electronics Corporation
    Inventors: Antony P. Chacko, John E. McConnell, Robert Ramsbottom, Philip M. Lessner, Randolph S. Hahn, John Bultitude
  • Patent number: 9524829
    Abstract: An improved process for forming a capacitor, and improved capacitor formed thereby is described. The process includes: providing an anode comprising a dielectric thereon; applying a first layer of an intrinsically conducting polymer on the dielectric to form a capacitor precursor; applying at least one subsequent layer of an intrinsically conducting polymer on the first layer from a dispersion; and treating the capacitor precursor at a temperature of at least 50° C. no more than 200° C. at a relative humidity of at least 25% up to 100%, or fusing the layered structure by swelling the layered structure with a liquid and at least partially removing the liquid.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: December 20, 2016
    Assignee: KEMET Electronics Corporation
    Inventors: Hong Zhang, Qingping Chen, Randolph S. Hahn
  • Publication number: 20160329156
    Abstract: An improved method of forming a capacitor, and capacitor formed thereby, is described. The method comprises forming an anode with an anode lead extending therefrom, forming a dielectric on the anode, forming a solid cathode layer on the dielectric and forming a hermetic encasement on the capacitor wherein the hermetic encasement comprises a conformal non-conductive layer.
    Type: Application
    Filed: April 4, 2016
    Publication date: November 10, 2016
    Inventors: Antony Chacko, Randolph S. Hahn, David Jacobs, Brandon Summey
  • Publication number: 20160211082
    Abstract: A method for forming a capacitor, a capacitor formed thereby and an improved composition for a conductive coating are described. The method includes providing an anode, forming a dielectric on the anode and forming a cathode layer over the dielectric by applying an amine, a weak acid and a conductive polymer.
    Type: Application
    Filed: March 29, 2016
    Publication date: July 21, 2016
    Inventors: Yaru Shi, Antony P. Chacko, Hong Zhang, Qingping Chen, Randolph S. Hahn, Lei Xu, Yang Jin, Zhen Wu
  • Patent number: 9362056
    Abstract: A solid electrolytic capacitor and method for forming a solid electrolytic capacitor with high temperature leakage stability is described. The solid electrolytic capacitor has improved leakage current and is especially well suited for high temperature environments such as down-hole applications.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: June 7, 2016
    Assignee: Kemet Electronics Corporation
    Inventors: Antony P. Chacko, Randolph S. Hahn, Pablo Antonio Ruiz
  • Patent number: 9343239
    Abstract: An improved process for forming a capacitor, and improved capacitor formed thereby is described. The process includes: providing an anode comprising a dielectric thereon; applying a first layer of an intrinsically conducting polymer on the dielectric to form a capacitor precursor; applying at least one subsequent layer of an intrinsically conducting polymer on the first layer from a dispersion; and treating the capacitor precursor at a temperature of at least 50° C. no more than 200° C. at a relative humidity of at least 25% up to 100%, or fusing the layered structure by swelling the layered structure with a liquid and at least partially removing the liquid.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: May 17, 2016
    Assignee: Kemet Electronics Corporation
    Inventors: Hong Zhang, Qingping Chen, Randolph S. Hahn
  • Publication number: 20160020034
    Abstract: A solid electrolytic capacitor and method for forming a solid electrolytic capacitor with high temperature leakage stability is described. The solid electrolytic capacitor has improved leakage current and is especially well suited for high temperature environments such as down-hole applications.
    Type: Application
    Filed: September 30, 2015
    Publication date: January 21, 2016
    Inventors: Antony P. Chacko, Randolph S. Hahn, Pablo Antonio Ruiz
  • Patent number: 9236191
    Abstract: A process for preparing a solid electrolytic capacitor comprising application of coverage enhancing catalyst followed by application of a conducting polymer layer. Coverage enhancing catalyst is removed after coating and curing.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: January 12, 2016
    Assignee: Kemet Electroncis Corporation
    Inventors: Antony P. Chacko, Yang Jin, Randolph S. Hahn, Yongjian Qiu, Philip M. Lessner, Keith R. Brenneman
  • Patent number: 9053866
    Abstract: An improved solid electrolytic capacitor and method of forming a solid electrolytic capacitor is described. The method includes forming an anode comprising a valve metal or conductive oxide of a valve metal wherein an anode lead extension protrudes from the anode. A dielectric is formed on the anode and a cathode layer is formed on the dielectric. The anode, dielectric, and cathode layer are encased in a non-conducting material and the anode lead extension is exposed outside of the encasement at a side surface. A conductive metal layer is adhered to the anode lead extension which allows termination preferably by electrically connecting a preformed solid metal terminal, most preferably an L shaped terminal, to the conductive metal layer at the side surface.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: June 9, 2015
    Assignee: Kemet Electronics Corporation
    Inventors: Brandon Summey, Jeffrey Poltorak, Philip M. Lessner, Yongjian Qiu, Randolph S. Hahn, David Jacobs, Keith R. Brenneman, Albert K. Harrington, Chris Stolarski
  • Publication number: 20150135496
    Abstract: A process for preparing a solid electrolytic capacitor comprising application of coverage enhancing catalyst followed by application of a conducting polymer layer. Coverage enhancing catalyst is removed after coating and curing.
    Type: Application
    Filed: September 19, 2014
    Publication date: May 21, 2015
    Inventors: Antony P. Chacko, Yang Jin, Randolph S. Hahn, Yongjian Qiu, Philip M. Lessner, Keith R. Brenneman
  • Patent number: 9030807
    Abstract: A process for preparing a solid electrolytic capacitor comprising application of coverage enhancing catalyst followed by application of a conducting polymer layer wherein the conductive polymeric cathode comprises the coverage enhancement catalyst wherein the conductive polymeric layer has improved coverage of the corners and edges. Coverage enhancing catalyst is removed after coating and curing.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: May 12, 2015
    Assignee: Kemet Electronics Corporation
    Inventors: Antony P. Chacko, Qingping Chen, Yang Jin, Philip M. Lessner, Randolph S. Hahn, Yongjian Qiu, Keith R. Brenneman
  • Publication number: 20150124374
    Abstract: An improved process for forming a capacitor, and improved capacitor formed thereby is described. The process includes: providing an anode comprising a dielectric thereon; applying a first layer of an intrinsically conducting polymer on the dielectric to form a capacitor precursor; applying at least one subsequent layer of an intrinsically conducting polymer on the first layer from a dispersion; and treating the capacitor precursor at a temperature of at least 50° C. no more than 200° C. at a relative humidity of at least 25% up to 100%, or fusing the layered structure by swelling the layered structure with a liquid and at least partially removing the liquid.
    Type: Application
    Filed: January 13, 2015
    Publication date: May 7, 2015
    Inventors: Hong Zhang, Qingping Chen, Randolph S. Hahn
  • Patent number: 8896986
    Abstract: A solid electrolytic capacitor with an anode and a dielectric on the anode. A cathode is on the dielectric and a conductive coating on the dielectric. A cathode lead is electrically connected to the conductive coating by an adhesive selected from the group consisting of a transient liquid phase sinterable material and polymer solder.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: November 25, 2014
    Assignee: Kemet Electronics Corporation
    Inventors: Antony P. Chacko, John E. McConnell, Philip M. Lessner, Randolph S. Hahn, John Bultitude