Document surrogates
CA 2121848 C · Owner: Rao, Ramana B. · Inventors: Klotz, Leigh L. Jr.; Withgott, M. Margaret; Johnson, Walter A. L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention involves a novel form and methods for creating and using such forms. These forms are summaries (hereinafter "document surrogates") of associated objects such as original documents, processes, or their copies stored in a document processing system. A document surrogate made in accordance with the principles of the present invention comprises at least one sheet of a information storing substrate material that has a human readable area and a machine readable area. The human readable area may contain at least one area of material which summarizes the associated object. Such a summary may either be made manually by the user or created automatically by the 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
- Filed April 21, 1994 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.