Patents by Inventor John H. Kooi

John H. Kooi 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).

  • Hot melt adhesive having both high peel and tensile shear strength
    Patent number: 4129607
    Abstract: Blends of certain block copolymers and epoxy resins, which have superior thermoplastic adhesive properties are disclosed. The blends are prepared by mixing hydroxy-terminated poly(ester/ether) block copolymers with epoxy resins. These unreacted blends are useful as hot melt thermoplastic adhesives having very high peel strength, high tensile shear strength, creep resistance at elevated temperatures, and good viscosity stability.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: December 12, 1978
    Assignee: Unitech Chemical Inc.
    Inventors: John H. Kooi, Ralph M. Schure, John M. Brown
  • High peel strength adhesives
    Patent number: 4093675
    Abstract: A polymeric compound having superior thermoplastic adhesive properties is disclosed. The compound is a poly(ester/ether) block copolymer which is extended with an anhydride to introduce carboxyl groups thereinto. Also disclosed are thermoset adhesives having superior properties and which are such carboxylated copolymers that have been crosslinked with a suitable resin.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: June 6, 1978
    Assignee: Unitech Chemical Inc.
    Inventors: Ralph M. Schure, John H. Kooi, John M. Brown