Patents by Inventor Ashfaqul I. Chowdhury

Ashfaqul I. Chowdhury 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).

  • IR-coated halogen lamp using reflective end coats
    Publication number: 20040104678
    Abstract: A halogen infrared lamp (100) having an infrared reflective coating (118) along with a totally reflecting coating (120) on ends of an ellipsoidal portion of the envelope. The totally reflecting coating reflects the infrared radiation escaping at acute angles and directs the infrared radiation towards the filament to increase the temperature of the filament and thus increase the efficacy of the lamp. The totally reflecting coating may also extend to portions of tubular members extending from the ellipsoidal portion of the envelope.
    Type: Application
    Filed: November 14, 2003
    Publication date: June 3, 2004
    Applicant: General Electric Company
    Inventors: Laurence Bigio, Rajasingh Israel, Ashfaqul I. Chowdhury, Laszlo Lieszkovszky