Patents by Inventor Joseph J. Manca

Joseph J. Manca 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).

  • Electron beam scrambler
    Patent number: 4621219
    Abstract: In an electron beam tube such as a gyrotron, electron dissipation on the collector wall is often quite non-uniform due to radial concentrations of the electrons. The dissipation is made more uniform by pseudo-random scrambling of trajectories by transverse magnetic fields which are non-uniform in transverse and axial dimensions.
    Type: Grant
    Filed: July 17, 1984
    Date of Patent: November 4, 1986
    Assignee: Varian Associates, Inc.
    Inventors: Lowell J. Fox, Joseph J. Manca