Anti-counterfeit latent image formation object for bills, credit cards, etc. and method for making the same
CA 2095971 C · Owner: Koyama, Masaharu · Inventors: Tanaka, Toshinori; Koyama, Masaharu; Nishiyama, Satoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anti-counterfeit latent image formation object for bills, bank notes, security papers, credit cards passports, valuable printing matters, and the like comprising a main body a plurality projections or recesses means formed on the main body in such a manner as to exhibit various kinds of patterns in which the various kinds of patterns comprise straight image lines forming a pattern, a relief pattern or a combination of, the pattern and the relief pattern; a plurality of straight lines printed on at least one surface of the main body at predetermined spaces, the straight lines being printed in a different color from that of the main body itself. The patterns consisting of letters, figures, …
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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 May 11, 1993 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2015.
- 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.