Patents by Inventor Renato Arpagaus

Renato Arpagaus 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).

  • Pipette and pipetting apparatus
    Patent number: 4967604
    Abstract: A pipette includes a pipette body made of plastic material and a pipette piston made of plastic material that is also electrically conductive. The pipette is automatically received or discarded in a pickup device which has an electric transmission filament.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: November 6, 1990
    Assignee: Hamilton Bonaduz
    Inventors: Renato Arpagaus, Herwig Leyssens, Bruno Hardmeier
  • Pipette and pipetting apparatus
    Patent number: 4830832
    Abstract: A pipette includes a pipette body made of plastic material and a pipette piston made of plastic material that is also electrically conductive. The pipette is automatically received or discarded in a pickup device which has an electric transmission filament. A pipetting apparatus has a pickup device for receiving test containers, a pickup section for a microstandard plate, a pipette hopper, and a dosing device. For automatic pipetting, the dosing device receives the pipettes, conveys the pipettes while simultaneously changing the distance of the pipettes to the test containers, absorbs liquid through the pipette, conveys the pipettes while simultaneously changing the distance of the pipette to the microstandard plate, discharges the liquid, and finally ejects the pipette.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: May 16, 1989
    Assignee: Hamilton Bonaduz AG
    Inventors: Renato Arpagaus, Herwig Leyssens