Patents by Inventor Gerd Pfister

Gerd Pfister 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).

  • Implantable infusion pump
    Patent number: 5382236
    Abstract: An infusion pump with a flexible medication container, a chamber containing a C.sub.2 Cl.sub.2 F.sub.4 propellant gas acting upon the medication container and a capillary tube acting as a choke. The propellant gas chamber accommodates a pressure of 2.5 bar over atmospheric.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: January 17, 1995
    Assignee: Anschutz & Co., GmbH
    Inventors: Karl-Heinz Otto, Gerd Pfister
  • Organic carrier with integrated active substances
    Patent number: 4743448
    Abstract: The present invention relates to a method for applying and using plant protection agents, preferably in agriculture and horticulture, in the form of sheets, webs and fabrics of organic material with integrated active substances. The integrated active substances slowly migrate from the polymer matrix and impose their effects at the point of application over an extended period of time. Such carrier/active substance combinations can be used as plant covers, mulches and for the production of stored crops.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: May 10, 1988
    Assignee: Gesellschaft fur Strahlen- und Umweltforschung mbH
    Inventors: Mufit Bahadir, Gerd Pfister, Friedhelm Korte