Deborah M Sutter

US Patent:

6418457, Jul 9, 2002

Filed:

Dec 10, 1997

Appl. No.:

08/988041

Inventors:

Richard Schmidt - New York NY
Deborah M. Sutter - New York NY
Leonid Vayner - New York NY
Thomas Cahill - Brooklyn NY

Assignee:

The Chase Manhattan Bank - NY

International Classification:

G06F 1500

US Classification:

707512, 707500, 705 51

Abstract:

A computerized document storage system for use by inventors to store their work on an invention and to secure their claim to a date of invention, the system comprising a document creator to enable the inventor to describe his invention in a document, a document saver that stores the document with a digital signature of the inventor and a time stamp. The saver prevents any further modification of the document except an addition of: a witness statement, a digital signature, and a time stamp. The system also includes a witness document modifier that only allows the witness statement, the digital signature and the time stamp to be added to a stored document. A document viewer is also included to list the documents stored in the system and to allow the documents to be read.