Patents by Inventor Jacobus J. Zandman

Jacobus J. Zandman 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).

  • Wound dressing and method of preparing the same
    Patent number: 5219325
    Abstract: The invention relates to a wound dresssing comprising (1) a lower layer of a hydrogel of a polymer cross-linked under the influence of electron beam (E.B.) radiation, to which optionally one or more medicinal and/or antibacterial agents and/or one or more auxiliary substances have been added, and (2) a polymeric top layer, in which the top layer consists at least substantially of an elastomer selected from the group consisting of a silicone rubber, a polyetherpolyurethane copolymer, a polyester-polyurethane copolymer, a polyether-polyester copolymer and an optionally modified block copolymer based on suitable vinyl monomers, and that a fibrous layer is provided between the lower layer and the top layer for bonding the two layers together.The invention further relates to a method of preparing said wound dressing.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: June 15, 1993
    Assignee: Duphar International, Research B.V.
    Inventors: Wilhelmus E. Hennink, Jacobus J. Zandman, Maria E. van der Heijden-van Beek, Hendrik Teunissen