Patents by Inventor Roger B. Purchell

Roger B. Purchell 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 of processing a text in order to store the text in memory
    Patent number: 5374928
    Abstract: A method of compressing text by allocating word tokens to each unique word and phrase tokens to adjacent word tokens, to adjacent phrase tokens or adjacent phrase and word tokens, which occur in the text at least three times and changing the binary character code representation of the text so that the text is represented by phrase and word tokens. A data processing system for decompressing and displaying the compressed text.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: December 20, 1994
    Assignee: Megaword International Pty. Ltd.
    Inventors: John D. Moore, Peter G. Swain, Roger B. Purchell, John Hilton