Patents Assigned to MDC Vacuum Products Corp.
  • Electron beam source for use with varying sizes of crucibles
    Patent number: 6012413
    Abstract: An electron beam source provides beam focusing by placing magnets under the crucible. The location of the magnets, operating in conjunction with the remaining magnetic and electromagnetic structure, permits varying sizes of crucibles to be used without redesign of the remainder of the electron beam source.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: January 11, 2000
    Assignee: MDC Vacuum Products Corp.
    Inventors: Nick Tsujimoto, Peter H. Harris, Wei Gao