Patents by Inventor David Kwan

David Kwan 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: 7167419
    Abstract: A timer is provided for indicating when a beverage within a beverage container is no longer fresh. The timer includes a timer body and a clip. The timer body contains electronic circuitry adapted to display a time remaining before the beverage is no longer fresh. The timer body further includes two L-shaped lugs spaced apart from one another. The clip includes two timer clamps attached to one another and a central retainer. Each timer clamp has a first end and a second end. The first end of each of the timer clamps is resiliently biased in a direction away from the other. The central retainer further includes a lug adapted to be attached to the L-shaped flanges of the timer body. The second end of the timer clamps is adapted to be easily attached to a beverage container.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: January 23, 2007
    Assignees: Newco Enterprises, Inc., Marketing Resources International, Inc.
    Inventors: David Kwan, David S. Felty, Joseph P. Webster
  • Publication number: 20050207282
    Abstract: A timer is provided for indicating when a beverage within a beverage container is no longer fresh. The timer includes a timer body and a clip. The timer body contains electronic circuitry adapted to display a time remaining before the beverage is no longer fresh. The timer body further includes two L-shaped lugs spaced apart from one another. The clip includes two timer clamps attached to one another and a central retainer. Each timer clamp has a first end and a second end. The first end of each of the timer clamps is resiliently biased in a direction away from the other. The central retainer further includes a lug adapted to be attached to the L-shaped flanges of the timer body. The second end of the timer clamps is adapted to be easily attached to a beverage container.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 22, 2005
    Inventors: David Kwan, David Felty, Joseph Webster
  • Patent number: 4751603
    Abstract: Hand-held electrical apparatus having an electrical detector in the form of a conductive sensor adjacent to any exposed electrical part so that if the apparatus becomes wet or damp the water will form path of conduction between the exposed electrical part and the sensor. A conductive path from the sensor forming part of the supply lead to the plug, and the plug comprising normally closed mechanical switch at least in the live line from the mains supply to the supply lead to the apparatus and a control circuit connected to the said sensor by the conductive path which open the switch as a result of the conductive path having been formed from the exposed electrical part because of the presence of moisture. The switch comprises a length of wire holding electrical contacts closed against the action of a spring. The control circuit fuse the wire, however, to allow the spring to open the contacts when the conductive path is established.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: June 14, 1988
    Assignee: Simatelex Manufactory Company Limited
    Inventor: David Kwan
  • Patent number: D588769
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 17, 2009
    Inventors: Arash Nourollah, David Kwan
  • Patent number: D612503
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: March 23, 2010
    Assignee: Response Biomedical Corporation
    Inventors: Robert Johnston, David Kwan-Kit Orr
  • Patent number: D612514
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: March 23, 2010
    Assignee: Response Biomedical Corporation
    Inventors: Robert Johnston, David Kwan-Kit Orr