Patents by Inventor Damien Drutel

Damien Drutel 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).

  • Photonitrosation of cyclododecane in chloroform in quasi-anhydrous medium
    Patent number: 6197999
    Abstract: The invention relates to a process for the preparation of cyclododecanone oxide consists in photochemically reacting cyclododecane, dissolved in chloroform, a nitrosating agent and hydrogen chloride in a virtually anhydrous medium, that is to say under conditions such that the water content in the reaction medium does not exceed 1000 ppm.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: March 6, 2001
    Assignee: Atofina
    Inventors: Jean Ollivier, Damien Drutel
  • Process for the preparation of lauryllactam by photonitrosation of cyclododecane and beckmann rearrangement in the presence of methanesulphonic acid
    Patent number: 6194570
    Abstract: A process for the preparation of lauryllactam comprises: (a) photochemically reacting cyclododecane solubilized in an organic solvent, a nitrosing agent and hydrogen chloride in the presence of an acid in order to form cyclododecanone oxime, and (b) subjecting said oxime to a Beckmann rearrangement in the presence of an acid, said process being characterized in that the acid used comprises methanesulphonic acid.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: February 27, 2001
    Assignee: Atofina
    Inventors: Jean Ollivier, Damien Drutel