Patents by Inventor Joseph Dussaud

Joseph Dussaud 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).

  • Filter paper for laden liquids
    Patent number: 6224768
    Abstract: The subject-matter of the present invention is a filter paper for laden liquids, with a high adsorption and absorption capacity. This paper, based on cellulose fibers, is filled with organic and/or inorganic pulverulent matter. The powder filling is adapted in quantity and quality to the liquid to be filtered. It finds its application in petrochemical, agri-foodstuffs and papermaking industries.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: May 1, 2001
    Assignees: Elf Antar France, Ahlstrom
    Inventors: Francois-Pierre Navarre, Bernard Bossand, Pierre Girard, Joseph Dussaud
  • Process and device for the anti-odor treatment of air
    Patent number: 6071472
    Abstract: The photocatalytic action of titanium dioxide and the anti-odor activity of undecylenic acid or its compounds are combined in an atmospheric scrubbing or renewal system. The invention consists in placing a filter impregnated with these two substances and exposed to a natural or artificial source of ultraviolet radiation in the path of the air.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: June 6, 2000
    Assignee: Elf Atochem S.A.
    Inventors: M. Henri-Jean Caupin, M. Joseph Dussaud
  • Device for purifying lightly laden water
    Patent number: 5984110
    Abstract: The subject matter of the present invention is a device for purifying lightly laden water containing particles and/or fatty matter and/or microorganisms in suspension. The device of the invention is a filter comprising a grid (1) on which is placed a filter element (3) consisting of at least one sheet based on fibers and filled with organic and/or inorganic powders. The invention finds its application in all the industries which consume water and especially the crude oil processing industries and the chemical, papermaking and agri-foodstuffs industries.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: November 16, 1999
    Assignees: Elf Antar France, Ahlstrom
    Inventors: Francois-Pierre Navarre, Bernard Bossand, Pierre Girard, Joseph Dussaud
  • Filled paper for gas filtration
    Patent number: 5965091
    Abstract: The present invention relates to a filled paper for gas filtration, with a high adsorption and absorption capacity. This paper, consisting of cellulose fibers, is filled with organic and/or inorganic powders adapted in quantity and in quality to the gas to be treated.It finds its application in the petroleum, chemical, agri-foodstuffs and papermaking industries, in apartment buildings and in office and hospital buildings.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: October 12, 1999
    Assignees: Elf Antar France, Ahlstrom
    Inventors: Francois-Pierre Navarre, Bernard Bossand, Pierre Girard, Joseph Dussaud