Patents by Inventor Alain Frey

Alain Frey 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).

  • Packaging based on a polymer containing polyamide blocks and polyether blocks, for conserving fresh produce
    Patent number: 5888597
    Abstract: The invention relates to a packaging comprising a thermoplastic film based on a polymer containing polyamide blocks and polyether blocks, said polymer being permeable to water vapor, to ethylene, to CO.sub.2 and to oxygen, such that the permeability to CO.sub.2 is very much greater than the permeability to oxygen. The invention is particularly useful for making sachets in order to conserve fresh fruit, vegetables or meat.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: March 30, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Alain Frey, Roland Leroux, Laurent Fischer
  • Packaging based on a polymer containing polyamide blocks and polyether blocks, for conserving fresh produce
    Patent number: 5840807
    Abstract: The invention relates to a packaging comprising a thermoplastic film based on a polymer containing polyamide blocks and polyether blocks, said polymer being permeable to water vapor, to ethylene, to CO.sub.2 and to oxygen, such that the permeability to CO.sub.2 is very much greater than the permeability to oxygen. The invention is particularly useful for making sachets in order to conserve fresh fruit, vegetables or meat.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: November 24, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Alain Frey, Roland Leroux, Laurent Fischer
  • Non-exuding thermoplastic elastomers
    Patent number: 5543489
    Abstract: The invention relates to a composition based on a thermoplastic elastomer comprising polyether sequences in which the amount of matter extractable by ethanol is less than a value sufficient to prevent exudation. Thermoplastic elastomer block copolymer compositions according to the invention comprise polyether blocks and blocks selected from the group consisting of polyamide blocks and polyester blocks, said copolymer compositions incorporating a quantity of terpolymer, selected from the group consisting of ethylene/unsaturated acid ester/unsaturated dicarboxylic acid anhydride terpolymer and ethylene/unsaturated acid ester/unsaturated glycidyl monomer terpolymer, sufficient to prevent exudation of polyamide, polyester, or polyether oligomers or impurities.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: August 6, 1996
    Inventors: Patrick Alex, Yves Aubert, Alain Frey