Patents by Inventor Prosper Zufferey

Prosper Zufferey 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).

  • MANUFACTURING METHOD FOR SYNTHETIC RESIN HOLLOW BODY
    Publication number: 20110115134
    Abstract: In a method of manufacturing a synthetic resin hollow body for holding a fluid material, such as cosmetic solutions, chemicals and beverages, a hollow molding body is filled with cooled gas or cooled and pressurized gas during an overmolding step.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 19, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Andre Rannard Cotterlaz, Karlheinz Hausmann, Philippe Milazzo, Sebastien Tindilliere, Prosper Zufferey
  • Injection molding process
    Patent number: 5788890
    Abstract: A process for making injection molded articles particularly ones having swirl patterns of polyamide in an ionomer (marble effect) employing a reciprocating screw injection molding machine is provided. The process involves making a nylon/colorant master batch and using a reciprocating screw injection machine to mold the nylon/colorant master batch and an ionomer under conditions that maintain the nylon/colorant master batch in a state wherein it will flow but will have a viscosity greater than the ionomer so that it will not disperse well in the ionomer at the temperature of injection molding.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: August 4, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ronald L. Grey, Prosper Zufferey