Patents by Inventor Piet Luyendijk

Piet Luyendijk 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 manufacturing sulphurized olefins
    Patent number: 6472354
    Abstract: To manufacture sulphurated products derived from olefin(s) by sulphurization using sulphur and hydrogen sulphide, the reaction is carried out in the presence of a solid acid catalyst and of a solid basic catalyst.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: October 29, 2002
    Assignee: Atofina
    Inventors: Piet Luyendijk, Jean-Francois Devaux, Bernard Monguillon
  • Process for manufacturing sulphurized olefins
    Publication number: 20020016510
    Abstract: To manufacture sulphurated products derived from olefin(s) by sulphurization using sulphur and hydrogen sulphide, the reaction is carried out in the presence of a solid acid catalyst and of a solid basic catalyst.
    Type: Application
    Filed: April 25, 2001
    Publication date: February 7, 2002
    Inventors: Piet Luyendijk, Jean-Francois Devaux, Bernard Monguillon
  • Purification of thiopene
    Patent number: 6077961
    Abstract: Process for purifying a thiophene contaminated by mercaptans comprising selectively oxidizing the mercaptans to form polysulphides, then distilling the thiophene in this way.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: June 20, 2000
    Assignee: Elf Atochem S.A.
    Inventors: Yves Labat, Piet Luyendijk