Patents by Inventor Walter Dolezal

Walter Dolezal 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).

  • Telephone handset with enhanced handset/handsfree receiving and alerting audio quality
    Patent number: 6324284
    Abstract: A handset comprising a sealed unit receiver and a loudspeaker, first apparatus for providing sound from the receiver to the ear of a user when the ear of the user is sealed to the handset, and second apparatus for providing sound from both the receiver and from the loudspeaker to the ear of the user when the ear of the user is only partly sealed to the handset.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: November 27, 2001
    Assignee: Nortel Networks Limited
    Inventors: Larry E. Hawker, Walter Dolezal
  • Telephone handset with enhanced handset/handsfree receiving and alerting audio quality
    Patent number: 6144738
    Abstract: A handset comprising a sealed unit receiver and a loudspeaker, first apparatus for providing sound from the receiver to the ear of a user when the ear of the user is sealed to the handset, and second apparatus for providing sound from both the receiver and from the loudspeaker to the ear of the user when the ear of the user is only partly sealed to the handset.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: November 7, 2000
    Assignee: Nortel Networks Corporation
    Inventors: Larry E. Hawker, Walter Dolezal