Patents by Inventor Luc Ferdinand Leon Colman

Luc Ferdinand Leon Colman 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).

  • Process for rigid polyurethane foams
    Patent number: 6335378
    Abstract: Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foam using as blowing agent a mixture containing from 1 to 50 mole % 1,1,1,3,3-pentafluoropropane and from 50 to 99 mole % isopentane and/or n-pentane.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: January 1, 2002
    Assignee: Imperial Chemical Industries PLC
    Inventor: Luc Ferdinand Leon Colman
  • PROCESS FOR RIGID POLYURETHANE FOAMS
    Publication number: 20010014703
    Abstract: Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foams comprising the step of reacting an organic polyisocyanate with a polyfunctional isocyanate-reactive component in the presence of a blowing agent mixture comprising from 50 to 90% by weight of cyclopentane and from 10 to 50% by weight of a mixture comprising isopentane and/or n-pentane and isobutane and/or n-butane wherein the weight ratio of isopentane and/or n-pentane over isobutane and/or n-butane is between 5/95 and 95/5.
    Type: Application
    Filed: February 22, 1999
    Publication date: August 16, 2001
    Inventors: RIK DE VOS, WALTER BAZZO, GUY LEON JEAN GHISLAIN BIESMANS, LUC FERDINAND LEON COLMAN
  • Process for rigid polyurethane foams
    Patent number: 6121338
    Abstract: Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foam using as blowing agent a mixture containing from 1 to 50 mole % 1,1,1,3,3-pentafluoropropane and from 50 to 99 mole % isopentane and/or n-pentane.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: September 19, 2000
    Assignee: Imperial Chemical Industries PLC
    Inventor: Luc Ferdinand Leon Colman