Patents by Inventor Colin Catherall

Colin Catherall 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).

  • High lumen output fluorescent lamp with high color rendition
    Patent number: 7138757
    Abstract: A high lumen output compact fluorescent lamp is disclosed that has a luminous efficiency of 40 lumen/W or higher. The fluorescent lamp comprises an envelope enclosing a discharge space, means for providing a discharge in the discharge space, a discharge gas sealed in the discharge space and a fluorescent layer made of a phosphor blend coated on the inner surface of the envelope.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: November 21, 2006
    Assignee: General Electric Company
    Inventors: Katalin Tóth, Ottokár Gyulasi, Colin Catherall
  • High lumen output fluorescent lamp with high color rendition
    Publication number: 20050236959
    Abstract: A high lumen output compact fluorescent lamp is disclosed that has a luminous efficiency of 40 lumen/W or higher. The fluorescent lamp comprises an envelope enclosing a discharge space, means for providing a discharge in the discharge space, a discharge gas sealed in the discharge space and a fluorescent layer made of a phosphor blend coated on the inner surface of the envelope.
    Type: Application
    Filed: October 15, 2004
    Publication date: October 27, 2005
    Inventors: Katalin Toth, Ottokar Gyulasi, Colin Catherall