Patents by Inventor Peter William Ash

Peter William Ash 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).

  • Waste materials sampling, assaying for desired components or metals, and refining
    Patent number: 7820448
    Abstract: A bulk sample is fed with a liquid into a mixing tank (1) where it is stirred to form a dispersion. A proportion of the dispersion is recycled from the bottom of the tank through a line to the top of the tank so that at least the dispersion in the recycle loop (3) is substantially homogeneous, and a representative sample of the dispersion is taken from the recycle loop, e.g. using a slurry sampler (5).
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: October 26, 2010
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Peter William Ash, Piers Scott Grumett, Brian Harrison
  • MATERIALS HANDLING AND SAMPLING
    Publication number: 20090007727
    Abstract: A bulk sample is fed with a liquid into a mixing tank (1) where it is stirred to form a dispersion. A proportion of the dispersion is recycled from the bottom of the tank through a line to the top of the tank so that at least the dispersion in the recycle loop (3) is substantially homogeneous, and a representative sample of the dispersion is taken from the recycle loop, e.g. using a slurry sampler (5).
    Type: Application
    Filed: September 16, 2008
    Publication date: January 8, 2009
    Applicant: Johnson Matthey Public Limited Company
    Inventors: Peter William Ash, Piers Scott Grumett, Brian Harrison
  • Waste material handling, sampling and metal content value calculation
    Patent number: 7439070
    Abstract: A bulk sample is fed with a liquid into a mixing tank (1) where it is stirred to form a dispersion. A proportion of the dispersion is recycled from the bottom of the tank through a line to the top of the tank so that at least the dispersion in the recycle loop (3) is substantially homogeneous, and a representative sample of the dispersion is taken from the recycle loop, e.g. using a slurry sampler (5).
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: October 21, 2008
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Peter William Ash, Piers Scott Grumett, Brian Harrison