Patents by Inventor Pieter J. Van Wyk

Pieter J. Van Wyk 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).

  • Composition for human consumption containing 3-(1-amino-1,3-dicarboxy-3-hydroxy-but-4-yl)-indole compounds
    Patent number: 5128164
    Abstract: The invention provides compositions for human consumption containing, as a sweet tasting constituent, a compound of the formula: ##STR1## and which is: 3-(1-amino-,3-dicarboxy-3-hydroxy-but-4-yl)-indole, including the isomers, salts and specified internal condensation derivatives thereof, and in particular those which have enhanced sweetening powers relatively to sucrose and which are useful as sweeteners for foods and beverages.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: July 7, 1992
    Assignee: South African Inventions Development Corporation
    Inventors: Pieter J. Van Wyk, Louis G. J. Ackerman
  • 3-(1-amino-1,3-dicarboxy-3-hydroxy-but-4-yl)-indole compounds
    Patent number: 4975298
    Abstract: The invention provides a compound of the formula: ##STR1## and which is: 3-(1-amino-1,3-dicarboxy-3-hydroxy-but-4-yl)-indole, including the isomers, salts and specified internal condensation derivatives thereof, and in particular those which have enhanced sweetening powers relative to sucrose and which are useful as sweeteners for foods and beverages.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: December 4, 1990
    Assignee: South African Inventions Development Corporation
    Inventors: Pieter J. Van Wyk, Louis G. Ackerman