Patents by Inventor Jan W. P. T. Van der Drift

Jan W. P. T. Van der Drift 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 the preservation of wood
    Patent number: 4778833
    Abstract: Composition for the preservation of wood containing a wood preservative, such as a boron compound or a fluorine compound, in a polymer or polymer composition, which upon contact with water releases the wood preservative. Said composition is introduced into a hole in the wood or in a wood construction, whereafter the hole is sealed.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: October 18, 1988
    Assignee: Nederlandse Centrale Organisatie voor Toegepast- Natuurweten- Schappelijk Onderzoek
    Inventors: Jan W. P. T. Van der Drift, Jan La Brijn