Patents by Inventor Pierre Scott

Pierre Scott 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: 4920533
    Abstract: A bidirectional cable communication system comprising a head and, a bidirectional transmission network connected to the head end for transmitting signals downstream from the head end to a plurality of subscriber stations and for transmitting data signals upstream to the head end from the subscriber stations, means at the head end for detecting collisions between signals received from the subscriber stations and for generating a collision signal, means at the head end for transmitting downstream on the transmission system status bits of data signal indicative of the collision, whereby upon detection thereof by a subscriber station it can be enabled to cease transmission.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: April 24, 1990
    Assignee: Videotron LTEE
    Inventors: Michel Dufresne, Samir Sammoun, Dave Gregory, Jean-Paul Champagne, Alain Tessier, Pierre Scott, Francois Methot
  • Patent number: 4623920
    Abstract: A system for providing television, information and data signals via a transmission network to selected subscribers, to groups of subscribers, or to all subscribers connected in common to the transmission network. An address code signal is stored at the subscriber station, and an option code signal is sent to the particular subscriber station from a head end of the network. Signals having an address portion designative of the option code or address code signal are sent down the transmission line and are translated by the subscriber station in the event the address matches the first and second code signal. Thus signals can be sent to all subscribers which have option codes designated by the address of data packets transmitted down the transmission line. These groups of subscribers can be all subscribers, individual smaller groups of subscribers, or a group consisting of even a single subscriber. The option codes can be changed from the head end at will.
    Type: Grant
    Filed: January 20, 1983
    Date of Patent: November 18, 1986
    Assignee: Le Groupe Videotron LTEE
    Inventors: Michel Dufresne, Jean-Paul Champagne, Daniel Dufresne, Pierre Scott, John Courtney
  • Patent number: 4338136
    Abstract: Fast-breaking bituminous emulsions are prepared by using a liquid emulsifying agent obtained by condensation at a temperature of 160.degree.-180.degree. C. of diethylenetriamine and a C.sub.12-18 fatty acid having an iodine value of at least 25, followed by at least partial cyclization of the condensation product at a temperature between approximately 190.degree. and 240.degree. C., the initial molar ratio between the diethylenetriamine and the fatty acid being at least 5 to 1, and the end product having a total amine index of at least 5.6 and optionally containing up to 10% free diethylenetriamine.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: July 6, 1982
    Assignee: APC-Azote et Produits Chimiques, S.A.
    Inventors: Pierre Goullet, Pierre Scotte