Patents by Inventor Mark E. Harr

Mark E. Harr 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).

  • Phenol-free phosphites
    Patent number: 7470735
    Abstract: Various phenol-free phosphites for use in PVC as an alternative to the conventional phenol-containing products phenyl diisodecyl phosphite and diphenyl isodecyl phosphite were tested. These phosphites utilize para-cumyl phenol-based derivatives in order to provide a phenol free derivative of the above mentioned conventional phosphites.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: December 30, 2008
    Assignee: Dover Chemical Corporation
    Inventors: Donald R. Stevenson, Duong N. Nguyen, Mark E. Harr, Michael R. Jakupca
  • Phosphite ester additive compositions
    Patent number: 7320764
    Abstract: The invention relates to liquid polymer additive compositions comprising blends of phosphite esters selected from the group consisting of aryl phosphites, alkyl phosphites, aryl/alkyl phosphites, bisphenol-A phosphites, dialkylene glycol phosphites and polydialkylene glycol phosphites, pentaerythritol phosphites, p-cumyl phenol phosphites with from 50 to 800 ppm inclusive of zinc per 100 parts resin. The stabilizer is used as either a complete or a partial replacement of toxic-metal containing antioxidant stabilizer additives.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: January 22, 2008
    Assignee: Dover Chemical Corporation
    Inventors: Donald R. Stevenson, Thomas C. Jennings, Mark E. Harr, Michael R. Jakupca
  • Phosphite ester additive composition
    Patent number: 6824711
    Abstract: The invention relates to a liquid polymer additive composition comprising at least one phosphite ester selected from the group consisting of aryl phosphites, alkyl phosphites, aryl/alkyl phosphites, bisphenol-A phosphites, dialkylene glycol phosphites and polydialkylene glycol phosphites, pentaerythritol phosphites, p-cumyl phenol phosphites and blends thereof and approximately from 50 to 800 ppm inclusive of zinc per 100 parts resin. The stabilizer is used as either a complete or a partial replacement of toxic-metal containing antioxidant stabilizer additives.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: November 30, 2004
    Assignee: Dover Chemical Corporation
    Inventors: Don R. Stevenson, Thomas C. Jennings, Mark E. Harr, Michael R. Jakupca
  • PHOSPHITE ESTER ADDITIVE COMPOSITIONS
    Publication number: 20040183054
    Abstract: The invention relates to liquid polymer additive compositions comprising blends of phosphite esters selected from the group consisting of aryl phosphites, alkyl phosphites, aryl/alkyl phosphites, bisphenol-A phosphites, dialkylene glycol phosphites and polydialkylene glycol phosphites, pentaerythritol phosphites, p-cumyl phenol phosphites with from 50 to 800 ppm inclusive of zinc per 100 parts resin. The stabilizer is used as either a complete or a partial replacement of toxic-metal containing antioxidant stabilizer additives.
    Type: Application
    Filed: May 11, 2004
    Publication date: September 23, 2004
    Applicant: DOVER CHEMICAL CORPORATION
    Inventors: Donald R. STEVENSON, Thomas C. JENNINGS, Mark E. HARR, Michael R. Jakupca
  • PHENOL-FREE PHOSPHITES
    Publication number: 20040180999
    Abstract: Various phenol-free phosphites for use in PVC as an alternative to the conventional phenol-containing products phenyl diisodecyl phosphite and diphenyl isodecyl phosphite were tested. These phosphites utilize para-cumyl phenol-based derivatives in order to provide a phenol free derivative of the above mentioned conventional phosphites.
    Type: Application
    Filed: May 14, 2004
    Publication date: September 16, 2004
    Applicant: DOVER CHEMICAL CORPORATION
    Inventors: Donald R. STEVENSON, Duong N. NGUYEN, Mark E. HARR, Michael R. JAKUPCA
  • Phosphite ester additive compositions
    Publication number: 20030001136
    Abstract: The invention relates to a liquid polymer additive composition comprising at least one phosphite ester selected from the group consisting of aryl phosphites, alkyl phosphites, aryl/alkyl phosphites, bisphenol-A phosphites, dialkylene glycol phosphites and polydialkylene glycol phosphites, pentaerythritol phosphites, p-cumyl phenol phosphites and blends thereof and approximately from 50 to 800 ppm inclusive of zinc per 100 parts resin. The stabilizer is used as either a complete or a partial replacement of toxic-metal containing antioxidant stabilizer additives.
    Type: Application
    Filed: March 1, 2002
    Publication date: January 2, 2003
    Inventors: Don R. Stevenson, Thomas C. Jennings, Mark E. Harr, Michael R. Jakupca