Patents Assigned to Refac International Ltd.
  • Patent number: 5747588
    Abstract: Thermoplastic urethane elastomeric alloys are obtained by melt compounding at least one first component that is a polyurethane elastomer having at least one plasticizer reacted therein, this first component being formed by heating a reaction mixture comprising at least one isocyanate having a functionality of less than about 2.2, at least one long chain polyol, at least one chain extender and at least one plasticizer in specified amounts at a temperature of at least about 330.degree. F. (165.6.degree. C.), with at least one second component that is another thermoplastic elastomer not within the definition of the first component.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: May 5, 1998
    Assignee: REFAC International, Ltd.
    Inventor: William H. Mann
  • Patent number: 5580946
    Abstract: The compositions of the invention are hot melt urethane compositions for application in the molten star at temperatures of from about 121.1.degree.-232.2.degree. C. having viscosities of less than 50,000 cps which upon cooling form an elastomeric solid.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 3, 1996
    Assignee: REFAC International, Ltd.
    Inventor: William H. Mann
  • Patent number: 5516857
    Abstract: Thermoplastic urethane elastomeric alloys are obtained by melt compounding at least one first component that is a polyurethane elastomer having at least one plasticizer reacted therein, this first component being formed by heating a reaction mixture comprising at least one isocyanate having a functionality of less than about 2.2, at least one long chain polyol, at least one chain extender and at least one plasticizer in specified amounts at a temperature of at least about 330.degree. F. (165.6.degree. C.), with at least one second component that is another thermoplastic elastomer not within the definition of the first component.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 14, 1996
    Assignee: REFAC International, Ltd.
    Inventor: William H. Mann
  • Patent number: D450049
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: November 6, 2001
    Assignee: Refac International Ltd.
    Inventors: Paul Lacotta, Mitra Leyde, William C. Fiebel
  • Patent number: D459340
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: June 25, 2002
    Assignee: REFAC International Ltd.
    Inventors: Mitra Leyde, Paul Lacotta, William C. Fiebel
  • Patent number: D425508
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 23, 2000
    Assignee: Refac International, Ltd.
    Inventors: William C. Fiebel, Paul Lacotta, Mitra Leyde, John Moldauer