Patents by Inventor Christopher L. Severance

Christopher L. Severance 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: 7589284
    Abstract: An EMI shielding material is provided for making EMI shielding gaskets, coating and other articles. The EMI shielding material includes a non-conductive polymer, an inherently conductive polymer and a conductive metal powder. These components are intimately combined to prepare EMI shielding materials having superior electrical and mechanical performance when used in applications such as housings for electronic components.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: September 15, 2009
    Assignee: Parker Hannifin Corporation
    Inventors: Christopher L. Severance, Douglas Nobbs, John D. Reynolds
  • Publication number: 20090084600
    Abstract: EMI shielding gaskets prepared by coating a resilient nonconductive core gasket with a coating or ink containing conductive nanoparticles. The coating layer can be applied at a thickness of 10 microns or less to achieve shielding levels comparable to conventional coatings which are typically an order of magnitude thicker.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 2, 2009
    Applicant: PARKER HANNIFIN CORPORATION
    Inventor: Christopher L. Severance
  • Publication number: 20090084599
    Abstract: An EMI shielded display window for an electronic device is prepared by coating at least one surface of the window with an optically transparent shielding layer. The shielding layer is a coating or ink containing conductive nanoparticles applied to the window at a thickness of 10 microns or less. The coating can be optionally plated with a layer of copper, silver or nickel for improved performance.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 2, 2009
    Applicant: Parker Hannifin Corporation
    Inventors: Christopher L. Severance, Ronald McBride, Matthew Finley
  • Patent number: 7005573
    Abstract: An EMI shield having at least one compartment for enclosing circuitry of an electronic device. The shield includes a first member formed of a first material such as a thin metal sheet or screen, or a metal-plated fabric or other electrically-conductive mesh, and a second member formed of a second material different than the first material which second material is an admixture of a plastic or other polymeric component and an electrically-conductive particulate filler component. The second member is integrally joined to the first member, and has at least one wall which extends from the first member and which together with the first member defines at least a portion of the compartment.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: February 28, 2006
    Assignee: Parker-Hannifin Corporation
    Inventors: William G. Lionetta, Louis M. Yantosca, Jr., Daniel S. Ventura, Christopher L. Severance, Douglas Nobbs, Robert E. Stiffler, David C. Rich
  • Publication number: 20040172502
    Abstract: An EMI shield having at least one compartment for enclosing circuitry of an electronic device. The shield includes a first member formed of a first material such as a thin metal sheet or screen, or a metal-plated fabric or other electrically-conductive mesh, and a second member formed of a second material different than the first material which second material is an admixture of a plastic or other polymeric component and an electrically-conductive particulate filler component. The second member is integrally joined to the first member, and has at least one wall which extends from the first member and which together with the first member defines at least a portion of the compartment.
    Type: Application
    Filed: February 12, 2004
    Publication date: September 2, 2004
    Inventors: William G. Lionetta, Louis M. Yantosca, Daniel S. Ventura, Christopher L. Severance, Douglas Nobbs, Robert E. Stiffler, David C. Rich