Patents by Inventor Christian Sauerwald

Christian Sauerwald 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).

  • Filter module having a closure element
    Patent number: 6858137
    Abstract: A closure element for sterile closure of connections, in particular connections of filter modules for dialysis, hemofiltration or ultrafiltration is described. A closure element with a simple design that provides a reliable seal is formed by having the closure element include a wall with an automatically closing slit-shaped indentation which when closed creates a germ-proof seal. The sealing element is used for sterile closure of connections of medical items, as well as for the medical items themselves.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: February 22, 2005
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Uwe Hahmann, Christian Sauerwald, Klaus Heilmann, Gerhard Breith, Steffen Fritzsche
  • Closure element
    Publication number: 20020104791
    Abstract: A closure element for sterile closure of connections, in particular connections of filter modules for dialysis, hemofiltration or ultrafiltration is described. A closure element with a simple design that provides a reliable seal is formed by having the closure element include a wall with an automatically closing slit-shaped indentation which when closed creates a germ-proof seal. The sealing element is used for sterile closure of connections of medical items, as well as for the medical items themselves.
    Type: Application
    Filed: January 18, 2002
    Publication date: August 8, 2002
    Inventors: Uwe Hahmann, Christian Sauerwald, Klaus Heilmann, Gerhard Breith, Steffen Fritzsche
  • Closure element
    Patent number: 6419825
    Abstract: A closure element for sterile closure of connections, in particular connections of filter modules for dialysis, hemofiltration or ultrafiltration is described. A closure element with a simple design that provides a reliable seal is formed by having the closure element include a wall with an automatically closing slit-shaped indentation which when closed creates a germ-proof seal. The sealing element is used for sterile closure of connections of medical items, as well as for the medical items themselves.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: July 16, 2002
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Uwe Hahmann, Christian Sauerwald, Klaus Heilmann, Gerhard Breith, Steffen Fritzsche, Igor Raiko