Patents by Inventor Roy J. Gritter

Roy J. Gritter 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).

  • LC/FTIR System with thermospray solvent separation
    Patent number: 4552723
    Abstract: Effluent from an LC is passed through a thermospray nozzle which flash vaporizes substantially all of the solvent while directing any sample components as a collimated beam onto a moving tape so that the various components form spots on the tape. The tape is moved along a path that intercepts the optical path of an FTIR spectrometer whereby IR energy from the spectrometer is passed through each sample component and is then spectrally analyzed. The tape can be wound up, stored, and later used for further analysis of the spots, as desired, in the FTIR spectrometer.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: November 12, 1985
    Assignee: International Business Machines Corporation
    Inventors: Gary E. Adams, John M. Casper, Roy J. Gritter
  • Positive electron beam resists of ortho chloro substituted phenol or cresol condensed with formaldehyde
    Patent number: 4379826
    Abstract: The sensitivity of a positive working electron beam resist is increased by using as the resist material a resin which is a condensation product of formaldehyde with a phenol or a cresol having a chloro substituent ortho to the hydroxyl group on its aromatic ring.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: April 12, 1983
    Assignee: International Business Machines Corporation
    Inventors: James Economy, Roy J. Gritter, Hiroyuki Hiraoka