Patents by Inventor Aziz Boukhelifa

Aziz Boukhelifa 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).

  • Patent number: 9102764
    Abstract: Disclosed are methods relating to monitoring the processing of polysaccharides and, in particular, monitoring the processing of guar in order to improve guar yield and/or lower impurity concentration in the wash effluent fluid.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: August 11, 2015
    Assignee: RHODIA OPERATIONS
    Inventors: Marie-Pierre Labeau, Kraig Luczak, Vincent Monin, Serge Henrot, Aziz Boukhelifa, Simon Firkins
  • Publication number: 20120130065
    Abstract: Disclosed are methods relating to monitoring the processing of polysaccharides and, in particular, monitoring the processing of guar in order to improve guar yield and/or lower impurity concentration in the wash effluent fluid.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 24, 2012
    Applicant: RHODIA OPERATIONS
    Inventors: Marie-Pierre Labeau, Kraig Luczak, Vincent Monin, Serge Henrot, Aziz Boukhelifa, Simon Firkins
  • Patent number: 7884229
    Abstract: A method for making a polyether monomer having at least one unsaturated site per molecule and having a desired number of alkoxyl repeating units includes the steps of reacting an active hydrogen-containing monomer having at least one unsaturated site per molecule with an alkyl oxide in the presence of an alkoxylation catalyst and a polymerization inhibitor at a temperature from about 30° C. to less than 45° C. to produce a polyether monomer. In one embodiment, from about 5 to about 1000 parts by weight of a phenothiazine polymerization inhibitor per one million parts by weight of the active hydrogen-containing monomer phenothiazine compound is used as the polymerization inhibitor.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: February 8, 2011
    Assignee: Rhodia Inc.
    Inventors: Amit K. Sharma, Claude K. Martin, Aziz Boukhelifa, Ning Chen
  • Publication number: 20070281871
    Abstract: A self-hydrating, self-crosslinking dry composition is used to prepare a hydrated, crosslinked fracturing fluid upon addition of water, the composition comprising (A) guar powder or a guar derivative powder; (B) crosslinker selected from the group consisting of boric acid, borax, borate ore, boron ore, antimony compounds, aluminum compounds, zirconium compounds, and titanium compounds; and (C) slow dissolving alkaline buffer, wherein the crosslinker (B) is non-encapsulated.
    Type: Application
    Filed: June 1, 2007
    Publication date: December 6, 2007
    Inventors: Subramanian Kesavan, Aziz Boukhelifa, Phillipe Neyraval
  • Publication number: 20060073988
    Abstract: A guar or a guar derivative powder having a D50 particle size of less than 40? which reaches at least 70% hydration within 60 seconds at about 70 degrees F., is disclosed. The powder can be used in applications such as drilling fluid; fracturing fluid; gravel packing fluids; completion fluid; animal litter; explosive; foodstuff; paperstock; floor covering; synthetic fuel briquettes; water thickener for firefighting; shampoo; personal care lotion; household cleaner; catalytic converter catalyst; electroplating solution; diapers; sanitary towels; super-adsorbent in food packaging; sticking plasters for skin abrasions; water-adsorbing bandages; foliar spray for plants; suspension for spraying plant seeds; suspension for spraying plant nutrients; flotation aid; and flocculent.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 6, 2006
    Inventors: Subramanian Kesavan, Phillipe Neyraval, Aziz Boukhelifa
  • Publication number: 20060068994
    Abstract: A guar or a guar derivative powder having a D50 particle size of less than 40? which reaches at least 70% hydration within 60 seconds at about 21° C., is disclosed. It has been found that the improved hydration can be seen at temperatures as low as 0.6° C. The powder can be used in applications such as drilling fluid; fracturing fluid; gravel packing fluids; completion fluid; animal litter; explosive; foodstuff; paperstock; floor covering; synthetic fuel briquettes; water thickener for firefighting; shampoo; personal care lotion; household cleaner; catalytic converter catalyst; electroplating solution; diapers; sanitary towels; super-adsorbent in food packaging; sticking plasters for skin abrasions; water-adsorbing bandages; foliar spray for plants; suspension for spraying plant seeds; suspension for spraying plant nutrients; flotation aid; and flocculent.
    Type: Application
    Filed: October 4, 2005
    Publication date: March 30, 2006
    Inventors: Subramanian Kesavan, Phillipe Neyraval, Aziz Boukhelifa
  • Publication number: 20040260116
    Abstract: A method for making a polyether monomer having at least one unsaturated site per molecule and having a desired number of alkoxyl repeating units includes the steps of reacting an active hydrogen-containing monomer having at least one unsaturated site per molecule with an alkyl oxide in the presence of an alkoxylation catalyst and a polymerization inhibitor at a temperature from about 30° C. to less than 45° C. to produce a polyether monomer. In one embodiment, from about 5 to about 1000 parts by weight of a phenothiazine polymerization inhibitor per one million parts by weight of the active hydrogen-containing monomer phenothiazine compound is used as the polymerization inhibitor.
    Type: Application
    Filed: May 4, 2004
    Publication date: December 23, 2004
    Inventors: Amit K. Sharma, Claude K. Martin, Aziz Boukhelifa, Ning Chen