Patents by Inventor Stephane Negre

Stephane Negre 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 code matching the base and mobile unit of a cordless telephone set
    Patent number: 4794636
    Abstract: A method and apparatus for code matching the base and mobile unit of a cordless telephone set. A new matching code is established by a microprocessor in the base unit each time the mobile unit is replaced thereon, and is stored in respective memories therein. Replacement of the mobile unit on the base unit is detected from the charging current which is then drawn by a rechargeable battery in the mobile unit from a power source connected to the base unit.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: December 27, 1988
    Assignee: U.S. Philips Corp.
    Inventors: Jean-Francois Sanglier, Stephane Negre