Patents by Inventor Dirk Anderheiden

Dirk Anderheiden 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).

  • Port cannula arrangement for connection to a port
    Patent number: 5456675
    Abstract: Main cannula arrangement (10) with a metal cannula (12) and a connecting piece (14), featuring a valve (46), which is closed in the disconnected state and open in the connected state.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: October 10, 1995
    Assignee: Fresenius AG
    Inventors: Peter Wolbring, Dirk Anderheiden