Patents by Inventor Joseph Rach

Joseph Rach 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).

  • Polyurethane composition with (meth)acrylate end groups useful in the manufacture of polishing pads
    Patent number: 5965460
    Abstract: Particular polyurethane photopolymers are disclosed as materials of construction in producing improved polishing pads. The polyurethane photopolymers are formed from a polyurethane prepolymer prepared from the reaction products of a first reactant selected from the group consisting of polyesters, polyethers, polybutadienes and mixtures of the foregoing with diisocyanates, further reacted with acrylates and/or methacrylates.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: October 12, 1999
    Assignee: Mac Dermid, Incorporated
    Inventors: Joseph Rach, Douglas Leach