Patents by Inventor John Grey

John Grey 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).

  • Extraction of compounds from dairy products
    Patent number: 7919131
    Abstract: The present invention relates to processes for the treatment of dairy products and dairy process streams to produce lipids and substantially defatted protein streams. More specifically it relates to the use of near critical fluid extraction techniques to extract lipids from liquid dairy products and dairy process streams. Preferred solvents for use in the described near critical extraction techniques are ether based solvents that are partially miscible with water. A particularly preferred solvent for use in the invention is dimethyl ether.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: April 5, 2011
    Assignee: Fonterra Co-Operative Group Limited
    Inventors: Andrew Fletcher, Katrina Fletcher, Owen Catchpole, John Grey
  • Extraction of compounds from dairy products
    Publication number: 20060275533
    Abstract: The present invention relates to processes for the treatment of dairy products and dairy process streams to produce lipids and substantially defatted protein streams. More specifically it relates to the use of near critical fluid extraction techniques to extract lipids from liquid dairy products and dairy process streams. Preferred solvents for use in the described near critical extraction techniques are ether based solvents that are partially miscible with water. A particularly preferred solvent for use in the invention is dimethyl ether.
    Type: Application
    Filed: January 30, 2004
    Publication date: December 7, 2006
    Inventors: Andrew Fletcher, Katrina Fletcher, Owen Catchpole, John Grey
  • Separation technology
    Publication number: 20060035350
    Abstract: A process for extracting a wide range of lipophilic compounds from urea-containing solutions is described. The process utilises a near-critical fluid as the extraction solvent. The process is particularly applicable to the extraction of polyunsaturated fatty acids from the filtrate obtained upon urea fractionation, as employed in the processing of fish and other oils. In contrast to known processes, the lipophilic compounds may be extracted without the use of non-food grade solvents, and are suitable for pharmaceutical and cosmetic use.
    Type: Application
    Filed: April 11, 2003
    Publication date: February 16, 2006
    Inventors: Owen Catchpole, Andrew Mackenzie, John Grey