Patents by Inventor Wah Leung Chan

Wah Leung Chan 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).

  • MULTIPLE INPUT PERSONAL AUDIO ENHANCEMENT DEVICE
    Publication number: 20150189452
    Abstract: A handheld multiple-input personal audio enhancement device comprises a device power source, a signal processor coupled to the device power source, a first bidirectional audio connector port coupled to the signal processor and a second bidirectional audio connector port coupled to the signal processor. The personal audio enhancement device may also include a wireless receiver antenna coupled to the signal processor for receiving wireless signals, and the signal processor may include a frequency-selective amplifier. A control interface may be coupled to the signal processor for selecting among a plurality of audio modes, including a wireless audio mode for listening to audio from a wireless audio signal, an ambient mode for listening to conversations, and an interconnect mode for using a telephone or other audio device. A predefined audio mode for listening to predefined audio signals may also be provided.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 2, 2015
    Inventors: Wah Leung CHAN, Karl WIKLUND
  • Game control pad
    Patent number: D394885
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: June 2, 1998
    Inventor: Wah Leung Chan
  • Game control pad
    Patent number: D424047
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: May 2, 2000
    Inventor: Wah Leung Chan
  • Game control pad
    Patent number: D431604
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: October 3, 2000
    Inventor: Wah Leung Chan