Patents by Inventor Jacob Van Broekhoven

Jacob Van Broekhoven 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).

  • Patent number: 4305019
    Abstract: Special commercially available fluorescent lamps of warm-white correlated color temperature of about K. have both good coloring index and efficacy. These lamps utilize as the light-emitting component a special three-component phosphor blend having emissions principally confined to the wavelength regions of from 430 nm to 485 nm, from 515 nm to 570 nm, and from 588 nm to 630 nm. This phosphor blend is relatively expensive and to decrease expense, it is known to utilize an undercoat of halophosphate phosphor of the same emission color, which decreases the amount of expensive phosphor required.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: December 8, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Eugene A. Graff, Jacob Van Broekhoven
  • Patent number: 4263530
    Abstract: Fluorescent lamp has warm-white color and both high efficacy and good color rendition. This performance is achieved by utilizing a broad-band-emitting apatite-structured calcium fluorophosphate activated by predetermined percentages of antimony and manganese and narrow red-orange-emitting yttrium oxide activated by a predetermined percentage of tervalent europium.
    Type: Grant
    Filed: July 17, 1979
    Date of Patent: April 21, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Jacob Van Broekhoven, Richard Corth
  • Patent number: 3974305
    Abstract: To improve the performance of fluorescent lamps which use strontium chloroapatite activated by a divalent europium as a luminescent material, prior to coating onto the lamp envelope, the luminescent material is washed with an aqueous fluoride solution and then rinsed to remove residual soluble fluoride.
    Type: Grant
    Filed: June 11, 1974
    Date of Patent: August 10, 1976
    Assignee: Westinghouse Electric Corporation
    Inventor: Jacob Van Broekhoven