Patents by Inventor James E. Sieffert

James E. Sieffert 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).

  • Method and apparatus for providing call screening on cordless telephone equipment using three-way calling
    Patent number: 6389293
    Abstract: A cordless telephone includes a ring detector state machine module to facilitate the answering of a call received at the cordless telephone. A screening state machine module enables three-way connection and aural monitoring of the incoming call on the cordless telephone.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: May 14, 2002
    Assignee: Cidco Communications LLC
    Inventors: Stephen J. Clore, Ronald E. Anglikowski, Mark C. Jensen, James E. Sieffert, William Eisenloeffel