Patents Assigned to D.E.J. International Research Company B.V.
  • Process for extracting caffeine from solutions thereof in carbon dioxide under high pressure
    Patent number: 4364965
    Abstract: Extraction of caffeine from solutions thereof is accomplished with carbon dioxide under high pressure, using adsorbents which combine a high adsorption capacity for caffeine with such hydrophilic properties that the caffeine-laden adsorbent can be regenerated using water only.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: December 21, 1982
    Assignee: D.E.J. International Research Company B.V.
    Inventors: Gerrit H. D. van der Stegen, Hendricus G. J. de Wilt
  • Process of the decaffeination of green coffee beans
    Patent number: 4364964
    Abstract: A process for removal of caffeine from green coffee beans is disclosed by extraction with an aqueous liquid and preferential adsorption of caffein from the extract by means of a synthetic polymer resin of the type that is obtainable by polymerization or copolymerization of monomers containing aromatic ring systems and acid groups, and whereby the ratio of the total adsorption capacity for caffein to the total ion exchange capacity is larger than about 1 and smaller than about 25.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: December 21, 1982
    Assignee: D.E.J. International Research Company B.V.
    Inventor: Gerrit H. D. van der Stegen
  • Process for extracting ground roasted coffee
    Patent number: 4277509
    Abstract: Primary extraction of ground roasted coffee. The coffee is first extracted with an amount of aqueous extraction liquid sufficient to extract substantially all of the dry soluble solids from the coffee, but preferably not so large that the extract must be concentrated for further processing. The coffee is next extracted with an aqueous extraction liquid to extract hydrophobic flavor components. The hydrophobic flavor components are removed from the resulting extract by stripping and recovered as a concentrated aqueous solution.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: July 7, 1981
    Assignee: D.E.J. International Research Company B.V.
    Inventor: Hermanus A. J. Wouda
  • Coffee extraction
    Patent number: 4158067
    Abstract: Process and apparatus for the preparation of extracts from ground roasted coffee and the like comprising subjecting ground roasted coffee sequentially to (a) exhaustive extraction of the solubles at a temperature at which no substantial hydrolysis of coffee solids occurs, (b) heating for a short time to a temperature at which insoluble coffee solids are transformed into extractable substances, and (c) exhaustive leaching at a temperature within the same range as that used for step (a).
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: June 12, 1979
    Assignee: D.E.J. International Research Company B.V.
    Inventor: Hermanus A. J. Wouda
  • Process for stabilizing tea extract and product
    Patent number: 4051267
    Abstract: Tea extract is stabilized for use in vending machines and for storage and transport in frozen or chilled condition by the incorporation therein of a carragheenan.
    Type: Grant
    Filed: January 26, 1977
    Date of Patent: September 27, 1977
    Assignee: D.E.J. International Research Company B.V.
    Inventor: Herman Jongeling