Patents by Inventor Parimal Vijaykant Joshi

Parimal Vijaykant Joshi 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 for providing a dial tone for use in wireless environments
    Patent number: 6198945
    Abstract: This invention provides a dial tone for use in analog, TDMA, and CDMA wireless environments and includes the capability to collect additional digits during certain calling feature activation. The dial tone supports call forwarding, cancel call forwarding, call waiting, cancel call waiting, calling number identification presentation, calling number identification restriction, three way calling (including IS-53 version of three way calling, three way calling with cancel call waiting and calling number identification presentation/restriction, and three way calling interactions with call forwarding), and limited call transfer. After the mobile user requests the desired feature, a tone generator typically located at the mobile switching station or the mobile station will provide dial tones or confirmation dial tones to aid the mobile users when initiating a calling feature.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: March 6, 2001
    Assignee: Lucent Technologies, Inc.
    Inventors: Liang-Chuan Chen, Parimal Vijaykant Joshi, Stephen Thomas Luc, Atul Bhogilal Shah, Ricky Lyn Willis