Patents by Inventor Henricus G. P. van der Voort

Henricus G. P. van der Voort 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 preparation of alkylene polyamine derivatives of polyalkenyl-substituted succinic anhydride
    Patent number: 4330471
    Abstract: An improved process is disclosed for the preparation of polyalkenyl-substituted succinic anhydride comprising a final thermal treatment after removal of excess maleic anhydride from the reaction mixture, resulting in lowered chlorine content of the desired product.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: May 18, 1982
    Assignee: Shell Oil Company
    Inventor: Henricus G. P. van der Voort
  • Process for the preparation of polyalkenyl-substituted succinic anhydride
    Patent number: 4282157
    Abstract: An improved process is disclosed for the preparation of polyalkenyl-substituted succinic anhydride comprising a final thermal treatment after removal of excess maleic anhydride from the reaction mixture, resulting in lowered chlorine content of the desired product.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: August 4, 1981
    Assignee: Shell Oil Company
    Inventor: Henricus G. P. van der Voort