Patents by Inventor Steven (nmn) Martens

Steven (nmn) Martens 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).

  • Duplex tab exhaust nozzle
    Patent number: 8087250
    Abstract: An exhaust nozzle includes a conical duct terminating in an annular outlet. A row of vortex generating duplex tabs are mounted in the outlet. The tabs have compound radial and circumferential aft inclination inside the outlet for generating streamwise vortices for attenuating exhaust noise while reducing performance loss.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: January 3, 2012
    Assignee: General Electric Company
    Inventors: Ephraim Jeff Gutmark, Steven (nmn) Martens