Patents by Inventor Joachim Hegmann

Joachim Hegmann 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).

  • Process for the production of dithiophosphoric acid polysulfide mixtures
    Patent number: 6761832
    Abstract: This invention relates to a process for the production of dithiophosphoric acid poly-sulfide mixtures, which is characterized in that dithiophosphoric acid disulfides are reacted with sulfur at elevated temperatures. The dithiophosphoric acid polysulfide mixtures produced using the process according to the present invention are used as sulfur donors for the vulcanization of natural and synthetic rubbers and in the latex vulcanization of natural and synthetic rubber latex.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: July 13, 2004
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Ludger Heiliger, Alfred Pauli, Joachim Hegmann, Clemens Schudok, Thomas Früh
  • Process for inhibiting the emission of hydrogen sulfide and/or mercaptans from sulfurized organic compounds
    Patent number: 6528462
    Abstract: The present invention provides a process for inhibiting the emission of hydrogen sulfide and/or mercaptans from sulfurized organic compounds, which generally contain a high proportion of sulfur by treating the sulfurized organic compounds with organic hydroperoxides.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: March 4, 2003
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Ludger Heiliger, Alfred Pauli, Joachim Hegmann, Michael Wühr, Achim Fessenbecker, Kurt Schilling