Patents by Inventor Hoi Nguyen

Hoi Nguyen 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).

  • Publication number: 20070161461
    Abstract: This invention of innovative device is about heated massaging, stimulating and exercising particularly made for hands. With the applying of hands on a pair of heated handles that have multi heated rubber spike deep massage cones, this device can help to revitalize underneath tiny muscles to control hand's skin problems. Especially the controlling for the women with dry to crack and extreme sweat palms. The pair of handles of this device will make a distinguish ΒΌ rounds countering from one to another. The agitating effective heated handles will control wrist acute pain due to getting hurt from long hour and daily working on computer key board.
    Type: Application
    Filed: January 11, 2006
    Publication date: July 12, 2007
    Inventor: Andy Hoi Nguyen
  • Patent number: 6259682
    Abstract: A power control circuit for use with a closed loop transmitter such as a cellular telephone. The inventive circuit includes an amplifier for varying the output power level of the transmitter output signal. The amplifier includes an input terminal and a gain control terminal. The transmitter output is fed back to the gain control terminal of the amplifier by a feedback loop. The feedback loop includes circuitry for adjusting the response thereof in response to a loop gain control signal. A control system is included for receiving a power level control signal over a predetermined range of transmitter output power levels and providing the loop gain control signal in response thereto whereby the feedback loop has a linear gain response over the predetermined range of output power levels. In the illustrative embodiment, the system is adapted for use in a mobile station of a cellular telephone system to which a power level control signal is supplied by a base station thereof.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: July 10, 2001
    Assignee: Uniden America Corporation
    Inventors: Stephen J. Brown, Hoi Nguyen
  • Patent number: 6253092
    Abstract: A power control circuit for use with a closed loop transmitter such as a cellular telephone. The inventive circuit includes a first element for providing a transmitter output signal. A second element serves to receive a power level signal. A third element is included for adjusting the transmitter output signal in response to the power level signal in accordance with a first scale factor over a first range if the power level signal is below a first threshold and for adjusting the transmitter output signal in response to the power level signal in accordance with a second scale factor over a second range if the power level signal is not below the first threshold. In the illustrative embodiment, the system is adapted for use in a mobile station of a cellular telephone system to which a power level control signal is supplied by a base station thereof. The first element is a variable gain amplifier, the second element is a microprocessor.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: June 26, 2001
    Assignee: Uniden Financial, Inc.
    Inventors: Hoi Nguyen, Stephen J. Brown