Patents by Inventor Michel Longuet

Michel Longuet 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).

  • Compositions and articles of manufacture
    Patent number: 6268407
    Abstract: A composition comprising a filler material, a chemical compound and a polymer. A preferred filler material comprises carbon black and preferred polymers include ethylene-containing polymers such as ethylene-propylene copolymer or ethylene-propylene terpolymers. The present invention also includes articles of manufacture incorporating the polymer compositions.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: July 31, 2001
    Assignee: Cabot Corporation
    Inventors: Robert S. Whitehouse, Michel Longuet, Theo Al, Michael Smith
  • Butyl rubber/polypropylene elastoplastic
    Patent number: 4916180
    Abstract: The present invention provides an elastoplastic composition comprising a butyl terpolymer rubber and polypropylene, which composition is characterized by being treated with a peroxide curing agent.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: April 10, 1990
    Assignee: Polysar Limited
    Inventors: Keith J. Robinson, Michel Longuet
  • Thermoset resin compositions
    Patent number: 4877832
    Abstract: This invention relates to unsaturated polyester compositions having improved impact resistance and good surface appearance. The compositions contain a novel additive. The novel additive comprises the partially polymerized product of a mixture comprising an elastomer and a styrenic monomer.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: October 31, 1989
    Assignee: Polysar Limited
    Inventors: Adrian Cassola, John C. Kwok, Keith J. Robinson, Brian H. A. Smith, Michel Longuet
  • Heterogeneous polymers
    Patent number: 4855337
    Abstract: Latices which may be used in paper coating compositions to provide reasonable stiffness and enhanced pick resistance contain heterogeneous particles comprising polymers based on styrene and butadiene and contain in one domain 1 to 20 weight % of an alkenyl nitrile.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: August 8, 1989
    Assignee: Polysar Financial Services S.A.
    Inventors: Claude Dequatre, Peter R. J. Blanpain, Michel Longuet
  • Polymer-asphalt mixing process
    Patent number: 4837252
    Abstract: The present invention provides a process for the preparation of polymer modified asphalt compositions.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: June 6, 1989
    Assignee: Polysar Limited
    Inventors: Frederick P. Seguin, Michel Longuet
  • Char resistant foams
    Patent number: 4537915
    Abstract: The resistance to internal charring of molded styrene-butadiene latex foam rubber when exposed to a lit cigarette is improved by incorporating from about 10 to 30 parts by dry weight, per hundred parts by dry weight of latex of a compound selected from the group consisting of an organic phosphate of the formula ##STR1## wherein R is a C.sub.6-12 alkyl radical or a phenyl radical, which is unsubstituted or substituted by a C.sub.1-4 alkyl radical, butyl benzyl phthalate, and a mixture thereof.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: August 27, 1985
    Assignee: Polysar International S.A.
    Inventors: Patrick Oberle, Michel Longuet, David Walker
  • Foam rubber backings for composite materials having glass fiber substrates coated with PVC
    Patent number: 4500591
    Abstract: Composite materials having glass fiber substrates and attached foam backings are useful in surface covering applications especially as resilient floor coverings. The glass fiber substrates are usually coated with a plastisol of polyvinyl chloride. Conventional foam rubber backings made from high solids SBR latex have poor adhesion to such coated substrates. However this problem may be overcome by using foam rubber backings made from a blend of SBR and NBR latices, which backings have excellent adhesion to these coated substrates.
    Type: Grant
    Filed: June 21, 1983
    Date of Patent: February 19, 1985
    Assignee: Polysar International S.A.
    Inventors: Gerard Peltier, Michel Longuet, Charles A. Midgley