Patents by Inventor Denis Grenouillat

Denis Grenouillat 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 preparing aliphatic fluorofomates
    Patent number: 6858751
    Abstract: A method for the production of aliphatic fluoroformates, wherein carbonyl fluoride is made to react with aliphatic alcohol in the presence of sodium fluoride in ether at a temperature of ?20° to 50° C. The method is carried out using carbonyl fluoride obtained by reacting phosgene with surplus powdered sodium fluoride, whereby the grains thereof have a specific surface of 0.1 m2/g or more and/or an average diameter of 20 ?m or less, at a temperature ranging from 25° to 120° C. The method enables unstable fluoroformates such as tertiobutyl to be obtained with excellent yields.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: February 22, 2005
    Assignee: Isochem
    Inventors: Jean-Pierre Senet, Gérard Sennyey, Philippe Delabrouille, Denis Grenouillat