Patents by Inventor Raphael K. T. Tang

Raphael K. T. Tang 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).

  • Wireless control system
    Patent number: 5146153
    Abstract: A remote wireless load control system wherein the power supplied to a load can be varied from a remote location using a remote control device not electrically wired to the load. The load control system includes a transmitter and a receiver, each having a control actuator for adjusting the power supplied to the load. Control can be conferred upon either the transmitter or the receiver immediately upon manipulation of the control switch, with the adjustment in power level occurring substantially instantaneously upon manipulation of the control actuator. Transmission of load level information between transmitter and receiver is by digitally pulse-coded infrared signal.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: September 8, 1992
    Inventors: David G. Luchaco, Stephen J. Yuhasz, David Buehler, Raphael K. T. Tang, Joel S. Spira
  • Transmitter for wireless light switching system
    Patent number: D302543
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: August 1, 1989
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Noel Mayo, Joel S. Spira, Raphael K. T. Tang
  • Transmitter for wireless light dimmer system
    Patent number: D303657
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: September 26, 1989
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Noel Mayo, Joel S. Spira, Raphael K. T. Tang
  • Transmitter for wireless light dimmer system
    Patent number: D303658
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: September 26, 1989
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Joel S. Spira, Noel Mayo, Raphael K. T. Tang
  • Transmitter for wireless light switching system
    Patent number: D306853
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: March 27, 1990
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Noel Mayo, Joel S. Spira, Raphael K. T. Tang