Patents by Inventor Erwin P. Simon

Erwin P. Simon 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).

  • Method for selecting multiple versions of data in a reduced record units text editing system
    Patent number: 5133066
    Abstract: A text document is stored as a sequence of primary records linked by a table. When an operator changes one of the records, the changed text is stored as a secondary record associated with a primary record in the table. If the operator later chooses to undo the changes, the secondary records are deleted. If he chooses to keep the changes, the secondary records are substituted for the associated primary records, and the latter are deleted.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: July 21, 1992
    Assignee: International Business Machines Corporation
    Inventors: Juanita J. Hansen, Dale A. Peterson, Erwin P. Simon, David G. Wenz