Patents by Inventor Daniel Duquenne

Daniel Duquenne 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).

  • Process for the absorption of pollutants
    Patent number: 5360579
    Abstract: A process for absorbing a water-soluble oil present as an aqueous emulsion in a cutting fluid which comprises contacting said cutting fluid with a composition containing at least one norborene polymer selected from polycyclo [2.2.1]-2-heptene or poly-5-methylbicyclo[2.2.1]-2-heptene, and at least one alkaline earth metal halide as an agent for breaking an aqueous emulsion of a water-soluble oil.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: November 1, 1994
    Assignee: Elf Atochem, S.A.
    Inventor: Daniel Duquenne
  • Composition for the absorption of pollutants
    Patent number: 5330957
    Abstract: Composition for the absorption of pollutants, comprising at least a norbornene polymer for 100 parts by weight of norbornene polymer: said composition comprising 5 to 250 parts by weight of at least one hydrosoluble oil aqueous emulsion breaking agent. Application: for a process of absorption of hydrosoluble oil contained in a cutting fluid.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: July 19, 1994
    Assignee: Elf Atochem S.A.
    Inventor: Daniel Duquenne
  • Article and process for absorbing contaminating products
    Patent number: 5071564
    Abstract: Decontaminating article comprising a preagglomerated, powdered polymer of bicyclo[2.2.1]-2-heptene or its methyl derivative in at least one fine-mesh textile bag. The bag is at least partially filled with the polymer. The decontaminating article can be used to absorb a liquid contaminating product, in particular petroleum hydrocarbon.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: December 10, 1991
    Assignee: Norsolor
    Inventors: Claude Stein, Daniel Duquenne