Patents by Inventor Tom Koai

Tom Koai 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).

  • Asymmetrical digital subscriber line (ADSL) upstream subscriber bus interface (SBI) protocol
    Patent number: 6647021
    Abstract: Asymmetrical digital subscriber line (ADSL) upstream subscriber bus interface (SBI) protocol provides a SBI frame format which allows compatibility between an ADSL line card and either an ADSL bank control unit (ABCU) or a conventional narrowband bank control unit (BCU), and compatibility between a conventional plain old telephone service (POTS) line card and either the ABCU or the conventional narrowband BCU.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: November 11, 2003
    Assignee: Alcatel USA Sourcing, L.P.
    Inventors: Prakash Appanna, Tony Huang, Hamid Baradaran, Hans Christian Mogensen, Jim Lotz, Tom Koai, Jensheng Lee