Patents by Inventor Ronald C. Koo

Ronald C. Koo 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: 9420934
    Abstract: A long-handled connector for cleaning implements utilizes a cable and a remotely located lever to selectively connect to and disconnect from a cleaning implement fixture, such as a mop head fixture. Outwardly-biased locking tabs project from an end of an elongate handle and engage with locking slots formed in a cleaning implement receiving base upon insertion of the handle end. Disconnection of the handle and base occurs upon the repositioning of the remotely-located lever, which is communicated to the locking tabs through an internally-extending, attached cable, resulting in the retraction of the locking tabs from within the locking slots, and the disconnection of the handle from the cleaning implement receiving base.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: August 23, 2016
    Inventors: Ronald C. Koo, Sandra Kau-Yu Koo
  • Patent number: 4090105
    Abstract: A high intensity discharge lamp in which the arc tube is located within an outer envelope. A multi-filament assembly is located within the outer envelope in series with the current supply to the arc tube. When the lamp outer envelope is broken, the filaments will burn out in the presence of air, open the current supply to the arc tube and extinguish the arc. The use of multi-filaments permits better control of the filament burn out time.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: May 16, 1978
    Assignee: Duro-Test Corporation
    Inventor: Ronald C. Koo
  • Patent number: 3992201
    Abstract: An annealed tungsten filament wire for electric lamps having substantially the same amounts of impurities therein as was present prior to annealing.
    Type: Grant
    Filed: March 4, 1974
    Date of Patent: November 16, 1976
    Assignee: Duro-Test Corporation
    Inventors: Ronald C. Koo, Joel Shurgan