Patents by Inventor Rudolf Herman Robert Poot

Rudolf Herman Robert Poot 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 and apparatus for injecting a liquid sample in an HPLC analyzing device, and valve assembly for use therein
    Patent number: 8322197
    Abstract: Method for injecting a liquid sample in an HPLC analyzing device, using an apparatus which comprises a first liquid circuit, a second liquid circuit, a valve assembly of the stator/rotor type, and a sample loop. In a first and a second valve position, respectively, the sample loop is either part of the first or of the second circuit, respectively. During the switching of the valve assembly from the second valve position into the first valve position, the valve assembly automatically and temporarily assumes an intermediate valve position in which the sample loop is automatically decompressed via a fourth connection chamber and a third valve outlet. In that intermediate valve position the sample loop is neither part of the first circuit nor part of the second circuit.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: December 4, 2012
    Assignee: Spark Hollands B.V.
    Inventors: Emile Hermannus Maarten Koster, Hermannus Geert Gijlers, Rudolf Herman Robert Poot, Otto Halmingh
  • Method and apparatus for injecting a liquid sample in an HPLC analyzing device, and valve assembly for use therein
    Publication number: 20100147086
    Abstract: Method for injecting a liquid sample in an HPLC analyzing device (43), using an apparatus (50) which comprises a first liquid circuit (11), a second liquid circuit (12), a valve assembly (30) of the stator/rotor type, and a sample loop (14). In a first and a second valve position, respectively, the sample loop is either part of the first or of the second circuit, respectively. During the switching of the valve assembly from the second valve position into the first valve position, the valve assembly automatically and temporarily assumes an intermediate valve position in which the sample loop is automatically decompressed via a fourth connection chamber (24) and a third valve outlet (7). In that intermediate valve position the sample loop is neither part of the first circuit nor part of the second circuit.
    Type: Application
    Filed: October 29, 2009
    Publication date: June 17, 2010
    Applicant: SPARK HOLLAND B.V.
    Inventors: Emile Hermannus Maarten Koster, Hermannus Geert Gijlers, Rudolf Herman Robert Poot, Otto Halmingh