Patents by Inventor Noel Crenne

Noel Crenne 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 purification of pseudo-ionone and a complex formed during said process
    Patent number: 5221797
    Abstract: A process for the purification of pseudo-ionone, which comprises preparing pseudo-ionone by a reaction of citral with acetone, followed by bringing the reaction medium into contact with a metal derivative and thereafter distilling the pseudo-ionone.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: June 22, 1993
    Assignee: Rhone-Poulenc Nutrition Animale
    Inventors: Pierre Chabardes, Noel Crenne
  • Process for preparing omega-formyloxy-alkanals
    Patent number: 3947490
    Abstract: An improved process for preparing .omega.-formyloxy-alkanals from the corresponding cycloalkyl peroxides and formic acid is provided in which the process is carried out in the presence of a small amount of a strong acid having a pKa of less than 2.
    Type: Grant
    Filed: May 31, 1974
    Date of Patent: March 30, 1976
    Assignee: Rhone-Poulenc S.A.
    Inventors: Jean Claude Brunie, Michel Costantini, Noel Crenne, Michel Jouffret