Patents by Inventor John Fromwiller

John Fromwiller 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).

  • PITCH RESISTANT HOT MELT POLYURETHANE
    Publication number: 20110174437
    Abstract: The present invention relates to hot melt polyurethanes. The polyurethane can include a polyol and both a pure and polymeric polyisocyanate. Generally the polyurethane can be used to improve pitch resistance in building materials.
    Type: Application
    Filed: September 2, 2010
    Publication date: July 21, 2011
    Inventors: John Fromwiller, Alyssa Brindel
  • PITCH RESISTANT HOT MELT POLYURETHANE
    Publication number: 20100116434
    Abstract: The present invention relates to hot melt polyurethanes. The polyurethane can include a polyol and both a pure and polymeric polyisocyanate. Generally the polyurethane can be used to improve pitch resistance in building materials.
    Type: Application
    Filed: January 21, 2010
    Publication date: May 13, 2010
    Inventors: John Fromwiller, Alyssa Brindel
  • Pitch resistant hot melt polyurethane
    Publication number: 20070031680
    Abstract: The present invention relates to hot melt polyurethanes. The polyurethane can include a polyol and both a pure and polymeric polyisocyanate. Generally the polyurethane can be used to improve pitch resistance in building materials.
    Type: Application
    Filed: July 25, 2006
    Publication date: February 8, 2007
    Inventors: John Fromwiller, Alyssa Brindel
  • Rapid curing aliphatic hot melt adhesive
    Patent number: 5965685
    Abstract: The present invention provides a viscosity stable, quick curing aliphatic hot melt polyurethane adhesive. The adhesive is prepared by reacting a hot melt polyurethane prepolymer comprising an unblocked aliphatic polyisocyanate and a polyol with a catalyst comprising 1,8-diazobicyclo(5,4,0)undec-7-ene or salt or blocked compound thereof.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: October 12, 1999
    Assignee: Reichhold Chemicals, Inc.
    Inventor: John Fromwiller
  • Reactive hot melt adhesives
    Patent number: 5916964
    Abstract: The reactive hot melt adhesive of the present invention comprises 40 to 60 percent by weight of a polytetramethylene ether glycol or derivative thereof, 1 to 10 percent by weight of a polyether polyol, 0 to 15 percent by weight of a hydrolytically stable polyester polyol, 0.5 to 3.0 percent by weight of a silane, and 10 to 30 percent by weight of an organic polyisocyanate.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: June 29, 1999
    Assignee: Reichhold Chemicals, Inc.
    Inventor: John Fromwiller