Patents by Inventor Allan I. Rubin

Allan I. Rubin 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).

  • Split magnetic lens for controlling a charged particle beam
    Patent number: 6624426
    Abstract: A magnetic lens focuses a charged particle beam generated by an instrument to a very small spot for deriving characteristics of a sample. The magnetic flux pattern is created by splitting the winding coil into a primary coil and a secondary coil. This enables faster adjustment of the magnetic flux, and with improved resolution.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: September 23, 2003
    Assignee: Schlumberger Technologies Inc.
    Inventor: Allan I. Rubin
  • Wien filter for use in a scanning electron microscope or the like
    Patent number: 6593578
    Abstract: A charged particle filter such as a Wien filter in which components used as the pole pieces and electrodes are precisely and reliably secured to a supporting structure through which they extend and to which they are brazed. Electrical insulating gaps in the magnetic circuit are located very remotely from the pole faces of the pole pieces so as to minimize any adverse effect of the gaps on the produced magnetic field.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: July 15, 2003
    Assignee: Schlumberger Technologies, Inc.
    Inventors: Paul J. Duval, Allan I. Rubin, Ira Rosenberg, Vladimir Vayner, Neal T. Sullivan
  • Split magnetic lens for controlling a charged particle beam
    Publication number: 20020070346
    Abstract: A magnetic lens focuses a charged particle beam generated by an instrument to a very small spot for deriving characteristics of a sample. The magnetic flux pattern is created by splitting the winding coil into a primary coil and a secondary coil. This enables faster adjustment of the magnetic flux, and with improved resolution.
    Type: Application
    Filed: December 11, 2000
    Publication date: June 13, 2002
    Inventor: Allan I. Rubin