Patents by Inventor Jean-Pierre Communal

Jean-Pierre Communal 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).

  • Method for treating aqueous liquid effluents containing organic and inorganic materials to enable recycling thereof
    Patent number: 6245121
    Abstract: Provided is a process for the treatment of aqueous effluents containing organic and inorganic matter and having a solids content of at most 12% by weight to provide a purified liquid phase and a solid organic fertilizer or organic soil improver. The process includes subjecting the effluent to one or more primary liquid/solid separation steps to obtain a liquid medium containing no more than 3% by weight of dry matter and having a turbidity of at most 300 NTU and a collection of concentrates containing in total 15% by weight dry matter. The liquid medium is subjected to ultra filtration or micro filtration to obtain an ultra filtrate or a micro filtrate containing at most 1% by weight dry matter and having a turbidity of at most 100 NTU. The ultra filtrate or micro filtrate is subjected to a reverse osmosis operation to obtain a concentrate and a permeate. The permeate constitutes a purified aqueous phase.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: June 12, 2001
    Assignee: Rhodia Chimie
    Inventors: Pierre-Yves Lamy, Jean-Pierre Communal
  • Basic aluminum chlorosulfate flocculant
    Patent number: 5518706
    Abstract: A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formula:Al.sub.n (OH).sub.m (SO.sub.4).sub.k Cl.sub.3n-m-2kand characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 21, 1996
    Assignee: Rhone-Poulenc Chimie De Base
    Inventors: Jean Boutin, Andre Combet, Jean-Pierre Communal
  • Biologically stable, untanned wet animal hides
    Patent number: 5147693
    Abstract: Biologically stable, fungistatic and bacteriostatic, untanned wet animal hides intrinsically insensitive to mildews, devoid of coloration and chromium values and containing from 50% to 70% of water, from 5% to 30% of inorganic matter, from 0.5% to 1.5% of Al.sub.2 O.sub.3 and from 85% to 90% of dermal material, are produced by impregnating pickled hides with a basic aluminum polychloride or polychlorosulfate and then alkalyzing the medium of impregnation.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: September 15, 1992
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean-Pierre Communal, Gerard Gavend
  • Basic aluminum chlorosulfate flocculating process
    Patent number: 5076940
    Abstract: A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formulaAl.sub.n OH.sub.m (SO.sub.4).sub.k Cl.sub.3n-m-2kand characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: December 31, 1991
    Assignee: Rhone-Poulenc Chimie de Base
    Inventors: Jean Boutin, Andre Combet, Jean-Pierre Communal
  • Basic aluminum chlorosulfate flocculant
    Patent number: 4981673
    Abstract: A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formula:Al.sub.n OH.sub.m (SO.sub.4).sub.k Cl.sub.3n-m-2kand characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: January 1, 1991
    Assignee: Rhone-Poulenc Chimie de Base
    Inventors: Jean Boutin, Andre Combet, Jean-Pierre Communal