Patent Yard Sign in
Expired Canadian patentCanada

Method of managing the retention of electronic documents in an interactive information handling system

CA 1287407 C · Owner: International Business Machines Corporation · Inventors: Macphail, Margaret Gardner

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A method of managing the retention and deletion of electronic documents in which the respective document retention needs of the document owners and the document retention criteria of the enterprise that functions as the central administration of the system are achieved without compromise by establishing a dual label for each document that is to be stored in the system and allowing a different expiration date to be entered into the system for each label. The first label is referred to as the Document Label (DL) and functions to identify the business use classification of the document. The second label is referred to as the Ownership Label (OL) and functions to identify a document …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 27, 1988
GrantedAugust 6, 1991
Term endedAugust 6, 2008
Patent numberCA 1287407 C
Classification (IPC)G06Q10/00 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedOct 27, 1988Patent grantedAug 6, 1991Term endedAug 6, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.