Patents by Inventor Hendrik J. Berkhoff

Hendrik J. Berkhoff 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).

  • Novel water-based, dimethyl ether-propelled aerosol composition
    Patent number: 4382078
    Abstract: Water-based aerosol compositions are disclosed which contain dimethylether as propellant and include a block co-polymer of ethylene oxide and propylene oxide as a surfactant to retain the active ingredients in the liquid phase.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: May 3, 1983
    Assignee: Polak's Frutal Works B.V.
    Inventors: Hendrik J. Berkhoff, Rudolf Zagt