Patents by Inventor Dominique Reffet

Dominique Reffet 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 N-acyliminodiacetic acids
    Patent number: 4533500
    Abstract: N-acyliminodiacetic acids are manufactured by reacting formaldehyde or a formaldehyde generator compound with a N-unsubstituted amide or a generator thereof and with carbon monoxide in contact with a carbonylation catalyst, for example, a cobalt compound, the ratio of the aldehyde groups to the amide groups being at least 2:1. The formaldehyde generator can be a polymeric form of formaldehyde and the amide generator can be a carboxylic ester, acid or anhydride.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: August 6, 1985
    Assignees: Institut Francais du Petrole, Societe Nationale Elf-Aquitaine (Production)
    Inventors: Yves Chauvin, Dominique Commereuc, Andre Hirschauer, Dominique Reffet, Robert Stern