Patents by Inventor Ralf Zimmerman

Ralf Zimmerman 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).

  • Capillary valve that can be pulsed
    Patent number: 6854712
    Abstract: In a capillary valve, which can be pulsed and which includes a capillary with a constriction forming a nozzle, a plunger is movably disposed in the capillary and forms, together with the capillary constriction, a seal, and a drive is provided for actuating the plunger within the capillary providing for a small, rapidly responsive, nozzle valve design.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: February 15, 2005
    Assignee: GSF - Forschungszentrum for Unwelt und Gesundheit GmbH
    Inventors: Egmont Rohwer, Ralf Zimmerman, Ralph Dorfner, Antonius Kettrup
  • Capillary valve that can be pulsed
    Publication number: 20030042458
    Abstract: In a capillary valve, which can be pulsed and which includes a capillary with a constriction forming a nozzle, a plunger is movably disposed in the capillary and forms, together with the capillary constriction, a seal, and a drive is provided for actuating the plunger within the capillary providing for a small, rapidly responsive, nozzle valve design.
    Type: Application
    Filed: September 24, 2002
    Publication date: March 6, 2003
    Inventors: Egmont Rohwer, Ralf Zimmerman, Ralph Dorfner, Antonius Kettrup