Patents by Inventor Heidi A. Rajan

Heidi A. Rajan 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).

  • Patent number: 5463659
    Abstract: A cordless telephone arranged for operation in a frequency hopping system includes multiple portable units configured for operation with a base unit and with each other by having the base unit pseudo randomly select from a plurality of communication channels available in the frequency hopping system a different starting channel for each one of the portable units. Each portable unit then provides initial communications with the base unit over the selected starting channel of the portable unit. For maintaining communications during a frequency hopping cycle between a portable unit and the base unit, the portable unit and base unit both generate a set of communication channels from the starting channel assigned to the portable unit for subsequent use in communicating over the radio frequency link. Each of the portable units is configured for operation with the base unit and with each other during a registration procedure.
    Type: Grant
    Filed: November 3, 1994
    Date of Patent: October 31, 1995
    Assignee: AT&T IPM Corp.
    Inventors: William J. Nealon, Heidi A. Rajan
  • Patent number: D376143
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: December 3, 1996
    Assignee: Lucent Technologies Inc.
    Inventors: Daniel R. Biskup, Pratod V. Kasbekar, Michael J. Nuttall, Heidi A. Rajan, Christopher A. Robinette, John H. Schaffeld, Chaonong Yoh
  • Patent number: D377014
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: December 31, 1996
    Assignee: Lucent Technologies Inc.
    Inventors: Daniel R. Biskup, Pratod V. Kasbekar, Michael J. Nuttall, Heidi A. Rajan, Christopher A. Robinette, John H. Schaffeld, Chaonong Yoh
  • Patent number: D378089
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: February 18, 1997
    Assignee: Lucent Technologies Inc.
    Inventors: Daniel R. Biskup, Pratod V. Kasbekar, Michael J. Nuttall, Heidi A. Rajan, Christopher A. Robinette, John H. Schaffeld, Chaonong Yoh