Patents by Inventor Hartmut Langer

Hartmut Langer 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: 9174251
    Abstract: A cleaning process is provided for a test apparatus that has a switch, external connections and internal volumes that can come into contact with a fluid from a filter to be tested or a container to be tested. The cleaning process includes selecting one or more internal volumes to be cleaned, cleaning the selected internal volumes with a cleaning fluid by a corresponding switching of the switch, at least partially draining the cleaning fluid left in the selected internal volumes after cleaning, and flushing the selected internal volumes with a flushing fluid different from the cleaning fluid. Also provided are a computer program product for performing the cleaning process, a cleaning apparatus, and a test apparatus for testing filters and containers.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: November 3, 2015
    Assignee: Sartorius Stedim Biotech GMBH
    Inventors: Martin Dahlberg, Hartmut Langer, Jens Meyer, Sven-Oliver Otto
  • Publication number: 20140283924
    Abstract: A cleaning process is provided for a test apparatus that has a switch, external connections and internal volumes that can come into contact with a fluid from a filter to be tested or a container to be tested. The cleaning process includes selecting one or more internal volumes to be cleaned, cleaning the selected internal volumes with a cleaning fluid by a corresponding switching of the switch, at least partially draining the cleaning fluid left in the selected internal volumes after cleaning, and flushing the selected internal volumes with a flushing fluid different from the cleaning fluid. Also provided are a computer program product for performing the cleaning process, a cleaning apparatus, and a test apparatus for testing filters and containers.
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Inventors: Martin Dahlberg, Hartmut Langer, Jens Meyer, Sven-Oliver Otto
  • Patent number: 8522601
    Abstract: There is a bag (1) that has at least one lateral gusset (4) and at least one port (8), a source (10) of pressurized gas, elements (11) for measuring the pressure of the gas; —there are two restraining plates and spacer strips. The bag is placed flat between the two restraining plates (2a, 2b). At least one spacer strip (15a, 15b) is inserted between the two small walls of each gusset in order to prevent these walls from resting on one another. The port is connected to the gas source and the pressure measuring elements. The gas is sent under pressure into the bag, the expansion of the bag being limited by the restraining plates; then, the pressure drop in the bag is compared to a predefined threshold.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: September 3, 2013
    Assignee: Sartorius Stedim Biotech S.A.
    Inventors: Nicolas Voute, Magnus Stering, Martin Dahlberg, Hartmut Langer
  • Publication number: 20110265820
    Abstract: A cleaning process is provided for a test apparatus that has a switch, external connections and internal volumes that can come into contact with a fluid from a filter to be tested or a container to be tested. The cleaning process includes selecting one or more internal volumes to be cleaned, cleaning the selected internal volumes with a cleaning fluid by a corresponding switching of the switch, at least partially draining the cleaning fluid left in the selected internal volumes after cleaning, and flushing the selected internal volumes with a flushing fluid different from the cleaning fluid. Also provided are a computer program product for performing the cleaning process, a cleaning apparatus, and a test apparatus for testing filters and containers.
    Type: Application
    Filed: April 19, 2011
    Publication date: November 3, 2011
    Applicant: SARTORIUS STEDIM BIOTECH GMBH
    Inventors: Martin Dahlberg, Hartmut Langer, Jens Meyer, Sven-Oliver Otto
  • Publication number: 20100326172
    Abstract: There is a bag (1) that has at least one lateral gusset (4) and at least one port (8), a source (10) of pressurized gas, elements (11) for measuring the pressure of the gas; —there are two restraining plates and spacer strips. The bag is placed flat between the two restraining plates (2a, 2b). At least one spacer strip (15a, 15b) is inserted between the two small walls of each gusset in order to prevent these walls from resting on one another. The port is connected to the gas source and the pressure measuring elements. The gas is sent under pressure into the bag, the expansion of the bag being limited by the restraining plates; then, the pressure drop in the bag is compared to a predefined threshold.
    Type: Application
    Filed: December 29, 2008
    Publication date: December 30, 2010
    Applicant: SARTORIUS STEDIM BIOTECH
    Inventors: Nicolas Voute, Magnus Stering, Martin Dahlberg, Hartmut Langer