Patents by Inventor Leonard G. Krauskopf

Leonard G. Krauskopf 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).

  • Preparation of plasticizer esters from phthalic anhydride residue
    Patent number: 5534652
    Abstract: A process for the formation of esters from at least one phthalic anhydride residue stream produced from the vapor phase oxidation of o-xylene, naphthalene and/or the like which comprises: (a) adding a phthalic anhydride residue stream and a mono-alcohol to a reaction vessel to form a reaction mixture; and (b) heating the reaction mixture and maintaining a pressure sufficient to obtain boiling of the reaction mixture thereby converting any acid and/or anhydride components of the phthalic anhydride residue stream to an ester.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: July 9, 1996
    Assignee: Exxon Chemical Patents Inc. (ECPI)
    Inventors: Larry O. Jones, Paul H. Daniels, Leonard G. Krauskopf, Konstantinos R. Rigopoulos, Richard H. Schlosberg
  • Polyol ester PVC plasticizers
    Patent number: 5430108
    Abstract: Plasticized PVC compositions are disclosed which are heat resistant and which exhibit low smoke generation where the plasticizer is a pentaerythritol ester of mixed C.sub.5, C.sub.7 and C.sub.9 alkanoic acids.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: July 4, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard H. Schlosberg, John R. Hooton, Leonard G. Krauskopf, Francisco M. Benitez, James D. Gerald