Patents by Inventor Etienne H Schacht

Etienne H Schacht 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).

  • Delivery of nucleic acid materials
    Patent number: 6312727
    Abstract: Synthetic polymer-based carrier vehicles for delivery of nucleic acid material to target cells in biological systems are made by self-assembly of the nucleic acid with cationic polymer material so as to condense the nucleic acid and form a polyelectrolyte complex and reacting the complex with hydrophilic polymer material which bonds to the complex forming a hydrophilic coating that stabilizes the complex and provides an outer protective steric shield. The carrier vehicles are useful for gene therapy.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: November 6, 2001
    Inventors: Etienne H Schacht, Leonard C W Seymour, Karel Ulbrich
  • Lithographic base with a modified dextran or pullulan hydrophilic layer
    Patent number: 5402725
    Abstract: This invention provides a lithographic base comprising a support provided with a hardened hydrophilic layer wherein the hardened hydrophilic layer comprises a dextran or pullulan modified with a group containing amine or amide functions having at least one free hydrogen.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: April 4, 1995
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Joan T. Vermeersch, Paul J. Coppens, Guido I. Hauquier, Etienne H. Schacht