Patents by Inventor Jan R. Haak

Jan R. Haak 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).

  • Membrane selective for metal ions
    Patent number: 5238548
    Abstract: An ionophore according to the general formula I wherein the substituents are chosen such that the ionophore is either also polymerized in the matrix of a membrane selective for metal ions or interwoven therewith. Thus obtained is a membrane having a long useful life for use in diverse sensors such as ISFET, ion-selective electrode, and the like.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: August 24, 1993
    Assignee: Priva Agro Holding B.V.
    Inventors: Peter D. van der Wal, Udo H. Verkerk, Gerardus W. N. Honig, Hermanus A. J. Holterman, Jan R. Haak, David N. Reinhoudt