Patents by Inventor Evan Karrs

Evan Karrs 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).

  • Energy efficient fluorescent lamp having an improved starting assembly and preferred method for manufacturing
    Patent number: 7642719
    Abstract: A discharge lamp having a starting assembly is provided for use with existing high frequency electronic ballasts. The lamp comprises a light-transmissive envelope and has a discharge sustaining fill of an inert gas mixture of krypton and argon. The starting assembly comprises at least one conductive path attached to the outside or inside surface of the envelope or embedded in the envelope.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: January 5, 2010
    Assignee: General Electric Company
    Inventors: Gary Robert Allen, William W. Beers, Matthew Pierce, Evan Karrs, Edward Eugene Hammer
  • Fluorescent lamp with conductive coating
    Patent number: 7378797
    Abstract: Fluorescent lamps that comprise a glass envelope with an exterior surface and first and second electrodes located within the glass envelope include a transparent electrically conductive material affixed to the exterior surface of the glass envelope. The transparent electrically conductive material extends between the vicinity of the first electrode and the vicinity of the second electrode, thereby providing a path for an electric current to pass between the first and second electrodes and reduce the open circuit voltage required to start the fluorescent lamp. The transparent electrically conductive material affixed to the exterior surface of the glass envelope can comprise one or more stripes of the material so that less than the total exterior surface area of the glass envelope is covered by the transparent electrically conductive material.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: May 27, 2008
    Assignee: General Electric Company
    Inventors: Evan Karrs, William W. Beers, Matthew Pierce, Gary R. Allen
  • Fluorescent lamp with conductive coating
    Publication number: 20070138960
    Abstract: Fluorescent lamps that comprise a glass envelope with an exterior surface and first and second electrodes located within the glass envelope include a transparent electrically conductive material affixed to the exterior surface of the glass envelope. The transparent electrically conductive material extends between the vicinity of the first electrode and the vicinity of the second electrode, thereby providing a path for an electric current to pass between the first and second electrodes and reduce the open circuit voltage required to start the fluorescent lamp. The transparent electrically conductive material affixed to the exterior surface of the glass envelope can comprise one or more stripes of the material so that less than the total exterior surface area of the glass envelope is covered by the transparent electrically conductive material.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Inventors: Evan Karrs, William Beers, Matthew Pierce, Gary Allen
  • Energy efficient fluorescent lamp having an improved starting assembly and preferred method for manufacturing
    Publication number: 20060226781
    Abstract: A discharge lamp having a starting assembly is provided for use with existing high frequency electronic ballasts. The lamp comprises a light-transmissive envelope and has a discharge sustaining fill of an inert gas mixture of krypton and argon. The starting assembly comprises at least one conductive path attached to the outside or inside surface of the envelope or embedded in the envelope.
    Type: Application
    Filed: April 12, 2005
    Publication date: October 12, 2006
    Inventors: Gary Allen, William Beers, Matthew Pierce, Evan Karrs, Edward Hammer