Patents by Inventor Rik De Vos

Rik De Vos 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).

  • Manufacture of rigid foams and compositions therefor
    Patent number: 5238970
    Abstract: The use of a liquid for the preparation of a rigid polyurethane and/or polyisocyanurate foam by reacting a polyisocyanate and a polyol in the presence of a blowing agent characterized in that the liquid is an inert, insoluble, non-blowing liquid. CFC-free foams may be obtained showing good insulating properties.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: August 24, 1993
    Assignee: Imperial Chemical Industries, Plc
    Inventor: Rik De Vos
  • Chemical blowing agent
    Patent number: 5132040
    Abstract: A method for the preparation of polymeric foams which comprises reacting an organic polyisocyanate with a cyclic carbonate having at least one isocyanate-reactive substitutent attached to the carbonate ring.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: July 21, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: David Randall, Rik De Vos
  • Chemical blowing agent
    Patent number: 5112879
    Abstract: A method for the preparation of polymeric foams which comprises reacting an organic polyisocyanate with a cyclic carbonate having at least one isocyanate-reactive substituent attached to the carbonate ring.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: May 12, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: David Randall, Rik De Vos