Patents by Inventor Thomas H. Williams

Thomas H. Williams 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).

  • Sequential ink jet printing system with variable number of guard drops
    Patent number: 4086601
    Abstract: Insertion of guard drops on a variable basis within a drop segment of an ink jet raster has been found to be highly successful in producing quality printing. A typical sequence isPgPgPgPggPgggPPgP .rarw. timewhere P designates a printed drop and g a guard drop. The drop on the right is the leading drop of the segment.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: April 25, 1978
    Assignee: International Business Machines Corporation
    Inventors: Gary L. Fillmore, James D. Hill, William F. Robinson, Thomas H. Williams
  • Subscripting, superscripting, and character height compression in ink jet printing apparatus
    Patent number: 3947853
    Abstract: Techniques are described for producing superscripts (half indexing), subscripts, and character height reduction for an ink jet printer.
    Type: Grant
    Filed: December 20, 1973
    Date of Patent: March 30, 1976
    Assignee: International Business Machines Corporation
    Inventors: Clifford M. Denny, Hugh E. Naylor, III, Thomas H. Williams