Patents by Inventor Gopi Ramachandran

Gopi Ramachandran 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).

  • Electrode materials for electric lamps and methods of manufacture thereof
    Publication number: 20070090764
    Abstract: An electron emissive material comprises an alkaline earth metal halide composition and operable to emit electrons on excitation.
    Type: Application
    Filed: October 20, 2005
    Publication date: April 26, 2007
    Inventors: Gopi Ramachandran, Alok Srivastava, Timothy Sommerer, Suchismita Sanyal, Prasanth Nammalwar, Holly Comanzo, William Beers, Madras Shankar
  • Mercury-free discharge compositions and lamps incorporating gallium
    Publication number: 20060132043
    Abstract: A mercury-free discharge composition may be provided. The ionizable mercury-free discharge composition may include gallium and a halogen. The composition may be capable of emitting radiation if excited, and the composition may produce a total equilibrium operating pressure less than about 100,000 Pascals if excited. A mercury-free discharge lamp may be provided. The mercury-free discharge lamp may include an envelope; an ionizable discharge composition including gallium contained by the envelope; and a phosphor composition contained by the envelope and in communication with the ionizable discharge composition.
    Type: Application
    Filed: December 29, 2005
    Publication date: June 22, 2006
    Inventors: Alok Srivastava, Timothy Sommerer, David Smith, Joseph Michael, William Beers, Holly Comanzo, Prasanth Kumar, Gopi Ramachandran, Madras Shankar, Ravikumar Hanumantha
  • Phosphors containing oxides of alkaline-earth and group-13 metals, and light sources incorporating the same
    Publication number: 20050242327
    Abstract: A phosphor comprises europium, at least two alkaline-earth metals, and at least a Group-13 metal. In one embodiment, the phosphor has a formula selected from the group consisting of Sr4-a-zAaEuzD12O22 and Sr4-a-zAaEuzD14O25; wherein A is at least an alkaline-earth metal other than strontium; D is an element selected from the group consisting of Group-13 metals, group-3 metals, and rare-earth metals; 0<a<4; 0.001<z<0.3; and 4-a-z>0. The phosphor can be used in light sources and displays.
    Type: Application
    Filed: May 3, 2004
    Publication date: November 3, 2005
    Inventors: Gopi Ramachandran, Mukunda Adyam, Shankar Venugopal, Anant Setlur, Alok Srivastava, Holly Comanzo, Venkatesan Manivannan, William Beers