Patents by Inventor Chris Bertelo

Chris Bertelo 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).

  • Impact additive of the core/shell type for thermoplastic polymers
    Patent number: 7015282
    Abstract: The invention relates to an impact additive of the core/shell type for thermoplastic polymers. This impact additive comprises a crosslinked elastomeric core based on n-alkyl acrylate and a shell made of poly(alkyl methacrylate) grafted onto said core.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: March 21, 2006
    Assignee: Arkema Inc.
    Inventors: Chris Bertelo, Gilles Meunier, André Lermite, Pascale Dargelos, Xavier Drujon
  • Composition based on organotin maleates which can be used to stabilize and lubricate thermoplastic polymers, Process for producing the said composition
    Patent number: 6156832
    Abstract: The invention relates to a composition containing organotin maleates such as is obtained by reacting a mixture of a low molecular weight alcohol or epoxyalkane and of a high molecular weight alcohol or epoxyalkane with maleic anhydride and by then bringing the mixture thus obtained into contact with a dialkyltin oxide. The invention also relates to poly(vinyl chloride) (PVC) composition stabilized and lubricated using the said composition based on organotin maleates and also to the extruded rigid objects formed from the said PVC compositions.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: December 5, 2000
    Assignees: Elf Atochem North American, Inc., Elf Atochem S.A.
    Inventors: Chris Bertelo, Muriel Cuilleret, Stephane Girois, Patrick Morel
  • Method for producing coagulated polymer latex particles
    Patent number: 6114415
    Abstract: A batchwise or continuous process for producing coagulated particles of polymer latex, involves partially or completely filling at least one receptacle with a fluid A which can be water, a polymer latex emulsion or a coagulant solution, the receptacle being equipped with baffles containing at least one orifice, injecting into the receptacle at least one fluid other than the fluid of the preceding stage, the injected fluid being a polymer latex emulsion and/or a coagulant solution, and in then creating and maintaining within the receptacle an oscillatory flow or an impulsive flow, in conjunction with the formation of eddies or of vortices.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: September 5, 2000
    Assignee: Elf Atochem, S.A.
    Inventors: Chris Bertelo, Laurent Gervat, Jerome Laffont, Malcolm Robert Mackley, Gilles Meunier
  • Impact additive of the core/shell type for thermoplastic polymers
    Patent number: 5773520
    Abstract: The invention relates to an impact additive of the core/shell type for thermoplastic polymers.This impact additive comprises a crosslinked elastomeric core based on n-alkyl acrylate and a shell made of poly(alkyl methacrylate) grafted onto the said core.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: June 30, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventors: Chris Bertelo, Gilles Meunier, Andre Lermite, Pascale Dargelos, Xavier Drujon
  • Reinforcing compositions including a precipitated silica for thermoplastic polymers which improved anticaking and flow properties
    Patent number: 5763515
    Abstract: The invention relates to reinforcing compositions for thermoplastic polymers which have improved anticaking and flow properties, which include an impact additive and a precipitated silica.These compositions are very particularly suitable for the reinforcement of PVC.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: June 9, 1998
    Assignee: ELF Atochem North America Inc.
    Inventors: Chris Bertelo, Paul Kunesch, Gilles Meunier
  • Reinforcing compositions for thermoplastic polymers, including a synergic combination of micronized silica and of calcium salt which have improved anticaking and flow properties
    Patent number: 5693699
    Abstract: The invention relates to reinforcing compositions for thermoplastic polymers which have improved anticaking and flow properties, which include an impact additive and a synergic combination including a micronized silica and at least one calcium salt.These compositions are very particularly suitable for the reinforcement of PVC.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: December 2, 1997
    Assignee: Elf Atochem North America Inc.
    Inventors: Chris Bertelo, Paul Kunesch, Gilles Meunier
  • Impact additive of the core/shell type for thermoplastic polymers
    Patent number: RE37851
    Abstract: The invention relates to an impact additive of the core/shell type for thermoplastic polymers. This impact additive comprises a crosslinked elastomeric core based on n-alkyl acrylate and a shell made of poly(alkyl methacrylate) grafted onto the said core.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: September 17, 2002
    Assignee: Atofina
    Inventors: Chris Bertelo, Gilles Meunier, Andre Lermite, Pascale Dargelos, Xavier Drujon