Patents by Inventor Jurgen Nentwig

Jurgen Nentwig 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).

  • Method of making an enzyme membrane for enzyme electrodes
    Patent number: 4987075
    Abstract: The inventive membrane of high selectivity comprises a laminated enzyme membrane, which is enclosed by two cellulose membranes. The laminated enzyme membrane is an enzyme-containing polyurethane layer; the cellulose membranes are coated with cellulose nitrate.The inventive process is characterized in that ferricyanide or hydrogen peroxide is added in the presence of peroxidase to the measurement sample, the measurement portion or the enzyme membrane.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: January 22, 1991
    Assignee: Akademie der Wissenschaften
    Inventors: Jurgen Nentwig, Frieder Scheller, Gunter Hanke, Wolfgang Breitmoser, Hartmut Weise, Dorothea Pfeiffer, Anette Nunchert, Florian Schubert, Christoph Meiske, Siegfried Kuhnel
  • Portioning and packing machine
    Patent number: 4445311
    Abstract: A portioning and packaging machine for pasty materials, especially food products such as butter, margarine and cheese, comprises a stationary feed tube around which a portioning head is rotated. The portioning head is formed with radial portioning cylinders receiving the material from the feed tube and pistons which are displaceable relative to the cylinders for driving the material into vertical filling tubes. The filling tubes are raised and lowered with respect to the head by a stationary cam arrangement which can also include a cam for raising and lowering a sleeve forming a packaging foil or sheet into a cup adapted to receive the portion. The sleeve picks up the sheet from a table rotating with the head and forms the cup which it carries into a cavity of a forming table in which the portion is deposited in the resulting cup.
    Type: Grant
    Filed: January 27, 1982
    Date of Patent: May 1, 1984
    Assignee: Asto Import- und Exportgesellschaft M.B.H. & Co. Kg.
    Inventor: Jurgen Nentwig