Patents by Inventor William Duncan Powrie

William Duncan Powrie 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).

  • Publication number: 20110111103
    Abstract: This invention is a novel composition for preserving fresh cut apples comprising a mixture of ascorbic acid, and one or more of calcium chloride, calcium carbonate, magnesium chloride, calcium hydroxide, and optionally, citric acid or sodium citrate. This invention also relates to a method of preserving fresh cut apples by treating the cut apples with the novel composition dissolved in water and packaging the treated fresh cut apples in a modified atmosphere package.
    Type: Application
    Filed: January 18, 2011
    Publication date: May 12, 2011
    Applicant: NATURESEAL, INC.
    Inventors: Perry D. Lidster, William Duncan Powrie, Miriam O'Donovan, Cheong Kit Leung
  • Patent number: 7931926
    Abstract: This invention is a novel composition for preserving fresh cut apples comprising a mixture of ascorbic acid, and one or more of calcium chloride, calcium carbonate, magnesium chloride, calcium hydroxide, and optionally, citric acid or sodium citrate. This invention also relates to a method of preserving fresh cut apples by treating the cut apples with the novel composition dissolved in water and packaging the treated fresh cut apples in a modified atmosphere package.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: April 26, 2011
    Assignee: NatureSeal, Inc.
    Inventors: Perry D. Lidster, William Duncan Powrie, Miriam O'Donovan, Cheong Kit Leung
  • Patent number: 7070826
    Abstract: This invention pertains to the process and formulation for the production of a multipurpose base consisting of mechanically-fractured apple cells and intact single apple cells and optionally gum stabilizers. The multipurpose base possesses desirable functional properties of smoothness, creaminess, viscosity enhancement, changeability and particulate carrier as well as nutraceutical and nutritional values. The multipurpose base is to be used as an ingredient for the preparation of smoothies, fruit salsa, fruit toppings, fruit desserts, soups and salad dressings.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: July 4, 2006
    Assignee: Pacific Rim Marketing Limited
    Inventors: Perry David Lidster, William Duncan Powrie, Patrick M. Chung
  • Patent number: 6383546
    Abstract: The invention pertains to the formulation and process for producing a universal fruit base, which is an apple mash-polysaccharide mixture to which fruit puree(s) and optionally concentrated fruit juice(s) are to be added to form beverage concentrates. The beverage concentrates are to be diluted with water and/or fruit juice(s) to create supreme, distinctive, refreshing, healthy, creamy, smooth, thick, non-gummy and non-settling fruit beverages (smoothies). The resulting beverages possess hydrated cellular particulates, which are stabilized by modified starch and xanthan gum and thus sedimentation of particulates does not occur during the storage of the resulting beverages. Homogenization is not required for particulate stabilization. Pasteurization and sterilization of the resulting beverages can be carried out without the loss of textural and flavour quality attributes and without particulate destabilization and sedimentation.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: May 7, 2002
    Assignee: Pacific Rim Marketing Limited
    Inventors: William Duncan Powrie, Michel Facon, Perry Lidster
  • Publication number: 20010053404
    Abstract: The invention pertains to the formulation and process for producing a universal fruit base, which is an apple mash-polysaccharide mixture to which fruit puree(s) and optionally concentrated fruit juice(s) are to be added to form beverage concentrates. The beverage concentrates are to be diluted with water and/or fruit juice(s) to create supreme, distinctive, refreshing, healthy, creamy, smooth, thick, non-gummy and non-settling fruit beverages (smoothies). The resulting beverages possess hydrated cellular particulates, which are stabilized by modified starch and xanthan gum and thus sedimentation of particulates does not occur during the storage of the resulting beverages. Homogenization is not required for particulate stabilization. Pasteurization and sterilization of the resulting beverages can be carried out without the loss of textural and flavor quality attributes and without particulate destabilization and sedimentation.
    Type: Application
    Filed: February 20, 2001
    Publication date: December 20, 2001
    Inventors: William Duncan Powrie, Michel Facon, Perry Lidster
  • Patent number: 5922382
    Abstract: This invention relates to a novel method of preserving fresh cut fruit for a prolonged period of time. More particularly, this invention is directed to a novel method of preparing and preserving fresh, vitaminized flavored or unflavored cut apple pieces to be stored in containers for extended periods of time of up to 6 weeks at refrigerated temperatures with the retention of acceptable naturally-occurring and adjunctive flavors, crisp texture and original whiteness or yellowness, being free of enzymatic browning.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: July 13, 1999
    Assignee: The University of British Columbia
    Inventors: William Duncan Powrie, Chiu Hui Wu
  • Patent number: 4097612
    Abstract: This invention relates to the treatment of raw white potatoes previously stored at low temperatures (about 40.degree. to 45.degree. F for periods up to 10 months) to render them suitable for thermal sterilization at about 250.degree. F and for long-term storage in flexible plastic or plastic-aluminum foil laminated containers such as pouches without added liquid. The process comprises; (a) immersion of potatoes, either whole, sliced, diced or in any other convenient form, in an aqueous solution comprising citrate in combination with sulfur dioxide; followed by (b) immersion in an aqueous solution of an alkali metal pyrophosphate and optionally a reducing saccharide; followed by (c) immersion in an aqueous solution of an alkaline earth metal salt and optionally an alkali metal chloride. The so-treated potato product is then packaged in a flexible container and thermally sterilized.
    Type: Grant
    Filed: March 16, 1976
    Date of Patent: June 27, 1978
    Assignee: Creston Valley Foods Ltd.
    Inventors: William Duncan Powrie, Marvin Tung