Patents by Inventor John A. Roper

John A. Roper 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).

  • ANTI-BIOFOULING COATING BASED ON EPOXY RESIN AND AMINE-FUNCTIONAL POLYSILOXANE
    Publication number: 20180355189
    Abstract: Curable coating compositions for preventing biofouling include a) at least one epoxy resin; b) at least one amine-functional poly(dialkylsiloxane) polymer in an amount from 1 to 70% based on the combined weights of components a) and b); and c) at least one alkylene polyamine, polyalkylene polyamine or polymercaptan epoxy curing agent; wherein components b) and c) together provide about 0.75 to 1.5 equivalents of amine nitrogen atoms and/or thiol groups per equivalent of epoxy groups provided by component a). When cured to form an antifouling coating, the coating exhibits a water contact angle of at least 100° as measured using an optical contact angle meter at 22° C. The coating composition adheres well to many substrates, provides good anticorrosion protection and is an effective anti-biofouling measure.
    Type: Application
    Filed: December 30, 2015
    Publication date: December 13, 2018
    Inventors: Yan Huang, Hongyu Chen, Xinyu Cao, Yu Zhang, Paul J. Popa, Yuteng Lin, John A. Roper, Gerald A. Vandezande
  • Method of producing a coated substrate
    Publication number: 20040121080
    Abstract: The present invention refers to a method of producing a coated substrate comprising the steps of:
    Type: Application
    Filed: October 16, 2003
    Publication date: June 24, 2004
    Inventors: Robert Urscheler, John A. Roper, Pekka J. Salminen, Francis Dobler
  • Method of producing a coated substrate
    Publication number: 20030194501
    Abstract: The present invention refers to a method of producing a coated substrate comprising the steps of:
    Type: Application
    Filed: October 17, 2002
    Publication date: October 16, 2003
    Inventors: Robert Urscheler, John A. Roper, Pekka J. Salminen, Francis Dobler