Patents by Inventor Douglas S. Wenstrand

Douglas S. Wenstrand 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).

  • Control system for prosthetic limb
    Patent number: 8999003
    Abstract: A controller for a prosthetic device includes a processing section, an interface section connected to the processing section, and a power supply connected to both the processing section and the interface section. A dorsal indicator and a dorsal switch are disposed in a hand portion of the prosthetic device, and are both connected to the interface section.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: April 7, 2015
    Assignee: The Johns Hopkins University
    Inventors: Douglas S. Wenstrand, Stuart D. Harshbarger
  • Control System for Prosthetic Limb
    Publication number: 20140067083
    Abstract: A controller for a prosthetic device includes a processing section, an interface section connected to the processing section, and a power supply connected to both the processing section and the interface section. A dorsal indicator and a dorsal switch are disposed in a hand portion of the prosthetic device, and are both connected to the interface section.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 6, 2014
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Douglas S. Wenstrand, Stuart D. Harshbarger
  • Digital geophone system
    Publication number: 20040252585
    Abstract: A high capacity digital geophone system capable of distributing seismic data over a computer network connection in a real-time manner. Each geophone can convert seismic energy signals to analog then digital data before forwarding the observed data to a network connection for dissemination. Moreover, each geophone may be embedded with a processing capability that allows for instant front end processing of data. Remote processing computers can then access geophone data over the network connection and feed it into software analysis applications.
    Type: Application
    Filed: April 14, 2004
    Publication date: December 16, 2004
    Inventors: Dexter G. Smith, Nicholas H. Evancich, Michael P. McLoughlin, Douglas S. Wenstrand