Patents by Inventor Roman Josef Jansen

Roman Josef Jansen 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).

  • Anesthetic syringe having a longitudinally displaceable feeding piston and check valve having passage and blocking device
    Patent number: 8574196
    Abstract: The invention relates to a syringe, particularly an anesthetic syringe, having a longitudinally displaceable feeding piston disposed over a first hydraulic chamber, and a second hydraulic chamber, wherein the first and second hydraulic chambers are connected by means of a first control element for regulating resistance, wherein the first control element can be actuated by a switch element, wherein the first control element comprises a first check valve.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: November 5, 2013
    Assignee: SMJM Inject GmbH
    Inventors: Christian Stammen, Georg Wagner, Olivier Georg Reinertz, Roman Josef Jansen
  • ANESTHETIC SYRINGE HAVING A LONGITUDINALLY DISPLACEABLE FEEDING PISTON AND CHECK VALVE HAVING PASSAGE AND BLOCKING DEVICE
    Publication number: 20110301538
    Abstract: The invention relates to a syringe, particularly an anesthetic syringe, having a longitudinally displaceable feeding piston disposed over a first hydraulic chamber, and a second hydraulic chamber, wherein the first and second hydraulic chambers are connected by means of a first control element for regulating resistance, wherein the first control element can be actuated by a switch element, wherein the first control element comprises a first check valve.
    Type: Application
    Filed: November 19, 2009
    Publication date: December 8, 2011
    Applicant: SMJM Inject GmbH
    Inventors: Christian Stammen, Georg Wagner, Olivier Georg Reinertz, Roman Josef Jansen