Information input and output method by use of dot pattern
CA 2811129 C · Owner: Yoshida, Kenji · Inventors: Yoshida, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention, by imparting different functions to respective dots of a dot pattern which is displayed on a printed material etc. aims to enable informatization expeditiously by recognizing directionality on the occasion of informatization from the dot pattern and to enable checking an error of a layout state of dots and further, to heighten security. In this connection in this invention, on a medium surface of a printed material etc. a plurality of lattice dots 4 are disposed in a rectangular shape and set as a block and they are regularly and continuously disposed and such a dot that 1 piece of the lattice dots 4 which exists in the block was disposed by being shifted unidirectionally is …
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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 March 17, 2003 and granted January 3, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2025.
- 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.