Security printed documents
CA 2084597 C · Owner: Roseberry, Arnold John · Inventors: Roseberry, Arnold John; Anderson, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a document designed to prevent reproduction by xerographic copying comprising a substrate (12) printed with a background printing (20) over a substantial portion of its surface, the background printing comprising a first printed pattern, first warning printed matter (21) located within the first pattern and second warning printed matter (22) located within the first warning printed matter. The first pattern is formed from a plurality of parallel lines extending in a first direction spaced from one another with a first spacing and having a first size the first, warning printed matter having a second size different from the first size, one of the first and second sizes …
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 December 4, 1992 and granted September 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2014.
- 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.