Patents by Inventor Cornelis W. A. Schetters

Cornelis W. A. Schetters 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).

  • Luminescent material comprising an alkaline earth borate
    Patent number: 6407498
    Abstract: The invention discloses new luminescent materials for use as UV-A phosphors in suntanning lamps. The luminescent materials are of general formula Ca3-xB2P2O11+0.5x:xCe3+ and Ca2.5-xB5.5P2O15.75+0.5x:xCe3+.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: June 18, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Thomas Justel, Hans Nikol, Cornelis W. A. Schetters
  • Luminescent aluminates and mercury vapor discharge lamp containing the same
    Patent number: 4150321
    Abstract: Luminescent aluminate with magnetoplumbite crystal structure, activated by cerium, by cerium and terbium or by cerium and manganese. The aluminate comprises at least one of the elements B, Si and P in a quantity of 0.001 to 0.20 mole per mole of aluminate which results in improved properties of luminescence. These aluminates are preferably used in low-pressure mercury vapor discharge lamps.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: April 17, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Cornelis W. A. Schetters, Marinus G. A. Tak, Abraham Sonneveld