Patents by Inventor John M. Flaherty

John M. Flaherty 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).

  • Method of making fluorescent lamp with improved lumen output
    Patent number: 4778581
    Abstract: The lumen output of a fluorescent lamp is improved by the triode radio frequency sputter coating of a continuous protective coating of vitreous alumina overlying the lamp phosphor layer.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: October 18, 1988
    Assignee: GTE Laboratories Incorporated
    Inventors: A. Gary Sigai, John M. Flaherty
  • Fluorescent lamps having improved lamp spectral output and maintenance and method of making same
    Patent number: 4698239
    Abstract: Lumen maintenance and spectral output of fluorescent lamps is improved by applying over the phosphor a vapor deposited film consisting of yttrium oxide and at least one activator. The vapor is generated by electron beam bombardment of the activated yttrium oxide target and the film is most efficacious when applied to a thickness of from about 0.2 microns to about 1.5 microns.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: October 6, 1987
    Assignee: GTE Products Corporation
    Inventor: John M. Flaherty
  • Fluorescent lamp with improved lumen output
    Patent number: 4670688
    Abstract: The lumen output of a fluorescent lamp is improved by the triode radio frequency sputter coating of a continuous protective coating of vitreous alumina overlying the lamp phosphor layer.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: June 2, 1987
    Assignees: GTE Products Corp., GTE Laboratories Incorporated
    Inventors: A. Gary Sigai, John M. Flaherty
  • Fluorescent lamps having improved lamp spectral output and maintenance and method of making same
    Patent number: 4633133
    Abstract: Lumen maintenance and spectral output of fluorescent lamps is improved by applying over the phosphor a vapor deposited film consisting of yttrium oxide and at least one activator. The vapor is generated by electron beam bombardment of the activated yttrium oxide target and the film is most efficacious when applied to a thickness of from about 0.2 microns to about 1.5 microns.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: December 30, 1986
    Assignee: GTE Products Corporation
    Inventor: John M. Flaherty
  • Protection film for improved phosphor maintenance and increased time-integrated light output
    Patent number: 4607191
    Abstract: In a fluorescent lamp having a phosphor coating, a maintenance improving and light output increasing film comprising yttrium oxide and at least one U.V. absorber is applied over the phosphor. The U.V. absorber is effective in the absorption of a greater amount of 185 nm radiation than 254 nm radiation from the plasma discharge. The film is most beneficial when applied over alkaline earth halophosphate phosphors at a film thickness of from about 50 angstroms to about 500 angstroms.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: August 19, 1986
    Assignee: GTE Products Corporation
    Inventor: John M. Flaherty
  • Fluorescent lamps having improved maintenance and method of making same
    Patent number: 4459507
    Abstract: Lumen maintenance of fluorescent lamps is improved by applying over the phosphor of the lamps a vapor deposited film of yttrium oxide having a purity of 99.99%. The vapor is generated by electron beam bombardment of an yttrium oxide target and the film is most efficacious when applied to a thickness of from about 120 to about 600 angstroms.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: July 10, 1984
    Assignee: GTE Products Corporation
    Inventor: John M. Flaherty