Patents by Inventor Francois Chambon

Francois Chambon 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: 6766177
    Abstract: To resolve problems of communication between a mobile telephone provided with a smart-card reader and the circuits of a smart-card reader, it is planned to provide this mobile telephone with a fourth microprocessor designed to manage the communications of the mobile telephone with the smart card only. This fourth microprocessor then becomes, in competition with a SIM security circuit of the mobile telephone, a master of the microprocessor of the mobile telephone. To resolve the problem of competition resulting from the existence of these two master circuits, it is planned that one of the two will be called upon to execute a command and that it will execute this command if it falls within the commands that are executable by it. If this command is not executable by this first microprocessor, then it is transmitted to the microprocessor of the second master circuit so that this second master circuit executes it. By acting in this way, it is shown that it is very easy to update mobile telephones, even old models.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: July 20, 2004
    Assignee: Sagem SA
    Inventors: François Chambon, Jocelyn Leheup
  • Publication number: 20020016186
    Abstract: To resolve problems of communication between a mobile telephone provided with a smart-card reader and the circuits of a smart-card reader, it is planned to provide this mobile telephone with a fourth microprocessor designed to manage the communications of the mobile telephone with the smart card only. This fourth microprocessor then becomes, in competition with a SIM security circuit of the mobile telephone, a master of the microprocessor of the mobile telephone. To resolve the problem of competition resulting from the existence of these two master circuits, it is planned that one of the two will be called upon to execute a command and that it will execute this command if it falls within the commands that are executable by it. If this command is not executable by this first microprocessor, then it is transmitted to the microprocessor of the second master circuit so that this second master circuit executes it. By acting in this way, it is shown that it is very easy to update mobile telephones, even old models.
    Type: Application
    Filed: March 14, 2001
    Publication date: February 7, 2002
    Inventors: Francois Chambon, Jocelyn Leheup
  • Patent number: 5320798
    Abstract: Processing, particularly extruding polyolefins having low MI, narrow MWD at extrusion temperatures less than about 200.degree. C. and at shear rates less than about 2000 sec.sup.-1 but immediately above the shear rate corresponding to the end of the slipstick region of the polyolefin produces a new window of processing conditions to produce smooth polymers that do not have sharkskin melt fracture or wavy surfaces.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: June 14, 1994
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Francois Chambon, Jean-Marc C. Dekoninck