Patents by Inventor Changmine Zhou

Changmine Zhou 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).

  • System for transfer control of telephone line
    Patent number: 6778654
    Abstract: A system for improving the level of service to the user, and billing according to user intentions while making effective use of telephone lines. The system includes a host computer (3) that controls communication services provided by telecommunications carriers, a base terminal (1) having base ID information which the host computer can identify, and a plurality of remote terminals (2A-2n.) having remote terminal ID information which the host computer can identify, to which control is transferred from the base terminal, and which communicate with the host computer.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: August 17, 2004
    Assignee: Yozan Inc.
    Inventors: Sunao Takatori, Changmine Zhou, Hisanori Kiyomatsu