Patents by Inventor Jonathan Stewart Witzeman

Jonathan Stewart Witzeman 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).

  • Stabilized non-polymeric acetoacetate esters that promote adhesion to metallic and oxidized substrates
    Patent number: 6005146
    Abstract: The present invention provides improved adhesion promoters for latex paints. The adhesion promoters are enamines of acetoacetate esters, or substituted acetoacetate esters. The invention also provides two new compounds which are useful as adhesion promoters: 2-butyl-2-ethyl-1,3-propanediol bis(3-amino-2-butenoate) and trimethyl propane tris(3-amino-2-butenoate), and which are stable to hydrolysis on prolonged storage.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: December 21, 1999
    Assignee: Eastman Chemical Company
    Inventors: Douglas Grant Atkins, Jonathan Stewart Witzeman
  • Stabilized non-polymeric acetoacetate esters that promote adhesion to metallic and oxidized substrates
    Patent number: 5913970
    Abstract: The present invention provides improved adhesion promoters for latex paints. The adhesion promoters are enamines of acetoacetate esters, or substituted acetoacetate esters. The invention also provides two new compounds which are useful as adhesion promoters: 2-butyl-2-ethyl-1,3-propanediol bis(3-amino-2-butenoate) and trimethyl propane tris(3-amino-2-butenoate), and which are stable to hydrolysis on prolonged storage.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: June 22, 1999
    Assignee: Eastman Chemical Company
    Inventors: Douglas Grant Atkins, Jonathan Stewart Witzeman