Patents by Inventor Erich A. Heide

Erich A. Heide 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).

  • Patent number: 3992947
    Abstract: A pipetting device in which one or more pipets for drawing in pipetting stance are connectible to a suction line connected to an underpressure chamber which has associated therewith a pressure controlling control valve, and in which the pipet or pipets for purposes of rinsing the pipetting material are adapted to be connected to a rinsing line connected to a container adapted to receive rinsing fluid, said rinsing container having associated therewith a rinsing fluid control valve. As underpressure chamber there is provided a liquid receiving chamber equipped with a discharge faucet, and between the container receiving rinsing fluid on one hand and the rinsing fluid control valve on the other hand there is provided a dosing device connected to the rinsing line for setting a selected quantity of rinsing fluid. For purposes of emptying the pipet or pipets the device is provided with a pressure gas conduit which through a pressure gas valve is connectible to the pipet or pipets.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: November 23, 1976
    Assignee: Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftung
    Inventors: Wolfram Thiemann, Erich A. Heide