Patents by Inventor James M. Dempsey

James M. Dempsey 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).

  • Patent number: 12105166
    Abstract: A radiation therapy system comprises a magnetic resonance imaging (MRI) system combined with an irradiation system, which can include one or more linear accelerators (linacs) that can emit respective radiation beams suitable for radiation therapy. The MRI system includes a split magnet system, comprising first and second main magnets separated by gap. A gantry is positioned in the gap between the main MRI magnets and supports the linac(s) of the irradiation system. The gantry is rotatable independently of the MRI system and can angularly reposition the linac(s). Shielding can also be provided in the form of magnetic and/or RF shielding. Magnetic shielding can be provided for shielding the linac(s) from the magnetic field generated by the MM magnets. RF shielding can be provided for shielding the MRI system from RF radiation from the linac.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: October 1, 2024
    Assignee: ViewRay Systems, Inc.
    Inventors: Shmaryu M. Shvartsman, Gordon D. DeMeester, James F. Dempsey, John Lester Patrick
  • Patent number: 5379229
    Abstract: An automated system for storing and retrieving objects from multiple object categories. A plurality of storage rack assemblies is included. Each storage rack assembly has a plurality of slots sized for storing objects. A storage transport is movable alongside each respective storage rack assembly for positioning adjacent any slot. A plurality of horizontal tracks are arranged to be perpendicular to the storage rack assemblies. Each storage rack assembly has an end adjacent the tracks. A runner transport is coupled to and movable on each track for receiving one of the objects from, or providing one of the objects to a storage transport. Two conveyor rack assemblies are located at opposite ends of the tracks, aligned perpendicularly to the track. Conveyor transports are adjacent the conveyor rack assemblies for transferring objects between the conveyor rack assembly and the runner transports.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: January 3, 1995
    Assignee: Communications Test Design, Inc.
    Inventors: Donald F. Parsons, Kyle Gress, James M. Dempsey, Joseph Ross, William Parsons, Stephen Parsons