Patents by Inventor Ronald T. Robichaud

Ronald T. Robichaud 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).

  • Barrier reducing permeation of hydrocarbons
    Publication number: 20030191219
    Abstract: The present invention is directed to a thermoplastic additive containing aluminum stearate and polyvinylidine fluoride which when added to thermoplastics such as polyethylene inhibits and reduces permeation of fluids stored within containers composed of the thermoplastic. The invention has been proven effective in reducing the permeation of hydrocarbon based materials.
    Type: Application
    Filed: April 5, 2002
    Publication date: October 9, 2003
    Inventor: Ronald T. Robichaud
  • Barrier reducing permeation of hydrocarbons
    Patent number: 6630529
    Abstract: The present invention is directed to a thermoplastic additive containing aluminum stearate and polyvinylidine fluoride which when added to thermoplastics such as polyethylene inhibits and reduces permeation of fluids stored within containers composed of the thermoplastic. The invention has been proven effective in reducing the permeation of hydrocarbon based materials.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: October 7, 2003
    Assignee: Greif Bros. Corp. of Ohio, Inc.
    Inventor: Ronald T. Robichaud
  • Barrier reducing permeation of hydrocarbons
    Publication number: 20010000181
    Abstract: The present invention is directed to a thermoplastic additive containing aluminum stearate and polyvinylidine fluoride which when added to thermoplastics such as polyethylene inhibits and reduces permeation of fluids stored within containers composed of the thermoplastic. The invention has been proven effective in reducing the permeation of hydrocarbon based materials.
    Type: Application
    Filed: November 29, 2000
    Publication date: April 5, 2001
    Inventor: Ronald T. Robichaud
  • Barrier reducing permeation of hydrocarbons
    Publication number: 20010000037
    Abstract: The present invention is directed to a thermoplastic additive containing aluminum stearate and polyvinylidine fluoride which when added to thermoplastics such as polyethylene inhibits and reduces permeation of fluids stored within containers composed of the thermoplastic. The invention has been proven effective in reducing the permeation of hydrocarbon based materials.
    Type: Application
    Filed: November 29, 2000
    Publication date: March 15, 2001
    Inventor: Ronald T. Robichaud
  • Process for preparing thermoplastic polyolefin resin articles of reduced hydrocarbon permeability
    Patent number: 5702786
    Abstract: A process is described for improving the hydrocarbon solvent impermeability of polyethylene resin based containers. The process employs a thermal profile during thermal molding, which creates a crystalline barrier adjacent one surface of the container. The barrier enhances impermeability of the container.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: December 30, 1997
    Assignee: Greif Bros. Corporation
    Inventor: Ronald T. Robichaud