Patents by Inventor Jean-Claude Hilaire

Jean-Claude Hilaire 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).

  • Polyamide powder formed by particles having a gypsum rose structure and process for preparing such powder
    Patent number: 4831061
    Abstract: A polyamide powder consisting essentially of elementary porous particles having a "gypsum rose" structure and a process for preparing a polyamide powder comprising polymerizing by anionic polymerization lactam in a solvent medium in the presence of a catalyst, an activator, and at least one amide; one of which is N,N'-alkylene bisamide; said polymerization being initiated with said lactam and said amide used in an amount such that the solvent is in the supersaturated state at the polymerization initiation temperature.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: May 16, 1989
    Assignee: Atochem
    Inventors: Jean-Claude Hilaire, Roland Guerin
  • Anhydrous process for the manufacture of polyamide powder from lactam in the presence of N,N'-alkylene bis amide
    Patent number: 4694063
    Abstract: A process for the manufacture of a polyamide powder comprising polymerizing in solution a reaction mixture comprising a monomer lactam or lactams capable of generating said polyamide in the presence of an N,N'-alkylene bisamide.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: September 15, 1987
    Assignee: Atochem
    Inventors: Jean-Claude Hilaire, Roland Guerin