Patents by Inventor Kurt Ira Butler

Kurt Ira Butler 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).

  • Low pressure sheet molding compounds
    Patent number: 5998510
    Abstract: This invention relates to low pressure sheet molding compounds and, more particularly, to a composition that is moldable at pressures below about 100 psi, said composition being made by combining: (A) an unsaturated prepolymer resin; (B) a monomeric unsaturated polymerizable material containing a terminal ethylene group; (C) a hydroxy-terminated polyester having a molecular weight in the range of about 500 to about 3000; (D) a polyisocyanate; and (E) a polymerization initiator; the mole ratio of NCO groups from (D) to OH groups from (C) being in the range of about 0.1 to about 10.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: December 7, 1999
    Assignee: Premix, Inc.
    Inventor: Kurt Ira Butler
  • Low pressure sheet molding compounds
    Patent number: 5744816
    Abstract: This invention relates to low pressure sheet molding compounds and, more particularly, to a composition that is moldable at pressures below about 100 psi, said composition being made by combining: (A) an unsaturated prepolymer resin; (B) a monomeric unsaturated polymerizable material containing a terminal ethylene group; (C) a hydroxy-terminated polyester having a molecular weight in the range of about 500 to about 3000; (D) a polyisocyanate; and (E) a polymerization initiator; the mole ratio of NCO groups from (D) to OH groups from (C) being in the range of about 0.1 to about 10.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: April 28, 1998
    Assignee: Premix, Inc.
    Inventor: Kurt Ira Butler