Patents by Inventor Yves Courtemanche

Yves Courtemanche 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).

  • Lactam dehydration method
    Patent number: 6635151
    Abstract: The present invention relates to a process for separating the water from an aqueous lactam solution. It applies more particularly to a mixture resulting from the reaction between an aminonitrile and water (this reaction also being called cyclizing hydrolysis). The subject of the invention is a process for separating the water from an aqueous lactam solution, which process is economical both from the standpoint of the investment necessary for its implementation and from the standpoint of the operating cost.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: October 21, 2003
    Assignee: Rhodia Fiber & Resin Intermediates
    Inventors: Gerald Bocquenet, Yves Courtemanche, Patrick Houssier