Patents by Inventor Hendrik Hoogendoorn

Hendrik Hoogendoorn 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).

  • Mouth care products
    Patent number: 4871532
    Abstract: Mouth-care products containing an oxidoreductase and a combination of an 8-hydroxy-quinoline and a compound yielding zinc ions.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: October 3, 1989
    Assignee: Douwe Egberts Koninklijke Tabaksfabriek Koffiebranderijen-Theehandel N.V.
    Inventor: Hendrik Hoogendoorn
  • Enzymatic dentifrices
    Patent number: 4178362
    Abstract: A novel enzymatic dentifrice comprises as its essential active ingredient an amount of glucose oxidane enzyme which forms hydrogen peroxide by oxidative decomposition of a glucose substrate provided by glucose present in saliva and tooth plaque so as to cause a substantial shift toward neutral values in the pH at the surface of teeth, when said pH is below the neutral range.
    Type: Grant
    Filed: November 9, 1978
    Date of Patent: December 11, 1979
    Assignee: Telec S.A.
    Inventors: Hendrik Hoogendoorn, Rutger Matthijsen, Huibert C. T. Moelker
  • Enzymatic dentifrices
    Patent number: 4150113
    Abstract: A novel enzymatic dentifrice comprises as its essential active ingredient an amount of glucose oxidane enzyme which forms hydrogen peroxide by oxidative decomposition of a glucose substrate provided by glucose present in saliva and tooth plaque so as to cause a substantial shift toward neutral values in the pH at the surface of teeth, when said pH is below the neutral range.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: April 17, 1979
    Assignee: Telec S.A.
    Inventors: Hendrik Hoogendoorn, Rutger Matthijsen, Huibert C. T. Moelker