Patents by Inventor Jean-Pierre Couvercelle

Jean-Pierre Couvercelle 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).

  • Use of a structure based on poly(dimethylketene) and objects comprising this structure
    Patent number: 6793995
    Abstract: A structure comprising one or more layers of a polymer (A) comprising: the units (A1) and the units (A2) wherein the A2/(A1+A2) molar ratio is between 0 and 30%, is suitable as a barrier against oxygen permeation under high relative humidity. The structure is, thus, useful as packaging and as hollow bodies, such as pipes, bottles and containers.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: September 21, 2004
    Assignee: Atofina
    Inventors: Hélène Egret, Claude Bunel, Jean-Pierre Couvercelle, Michaël Werth, Yves Germain
  • Use of a structure based on poly(dimethylketene) and objects comprising this structure
    Publication number: 20030157282
    Abstract: The invention relates to the use of a structure comprising at least one layer of a polymer (A) comprising:
    Type: Application
    Filed: December 30, 2002
    Publication date: August 21, 2003
    Inventors: Helene Egret, Claude Bunel, Jean-Pierre Couvercelle, Michael Werth, Yves Germain
  • Use of a structure based on poly(dimethylketene) and objects comprising this structure
    Patent number: 6528135
    Abstract: A structure comprising at least one layer of a polymer (A) comprising: the units (A1) and the units (A2) wherein the A2/(A1+A2) molar ratio is between 0 and 30% is a barrier against oxygen permeation under high relative humidity, making the structure useful for packaging and hollow bodies, such as pipes, bottles and containers.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: March 4, 2003
    Assignee: Atofina
    Inventors: Hélène Egret, Claude Bunel, Jean-Pierre Couvercelle, Michaël Werth, Yves Germain