Patents by Inventor Vidya Sagar Rao

Vidya Sagar Rao 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).

  • Noise control device
    Patent number: 6285772
    Abstract: An apparatus is disclosed for the cancellation of ambient noise that impinges upon the front surface of a pressure differential microphone means. The apparatus utilizes one or more curved surfaces that act as ambient noise waveform reflectors. The reflectors cause ambient noise to impinge on the back surface of the microphone. In addition, the reflectors deflect a speaker's voice which is directed toward the front surface of the microphone to be deflected away from the back surface of the microphone.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: September 4, 2001
    Assignee: UmeVoice, Inc.
    Inventors: Joseph B. Tate, Steven B. Wolff, Vidya Sagar Rao
  • Articulating reversible headpiece
    Patent number: D476645
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: July 1, 2003
    Assignee: Umevoice, Inc.
    Inventors: Adithya Padala, Vidya Sagar Rao, Jeffrey R. Wyatt, Mark H. Olson, Gary Holland, Mitchel Pergola, Ethan Imboden, Timothy F. Roberts
  • Noise cancellation device
    Patent number: D427998
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: July 11, 2000
    Assignee: Umevoice, Inc.
    Inventors: Joseph B. Tate, Steven B. Wolff, Vidya Sagar Rao
  • Element for a noise cancellation device
    Patent number: D427999
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: July 11, 2000
    Assignee: Umevoice, Inc.
    Inventors: Joseph B. Tate, Steven B. Wolff, Vidya Sagar Rao
  • Element for a noise cancellation device
    Patent number: D428408
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: July 18, 2000
    Assignee: Ume Voice, Inc.
    Inventors: Joseph B. Tate, Steven B. Wolff, Vidya Sagar Rao