Ink-jet recording medium and ink-jet recording method making use of it
CA 2033221 C · Owner: Sato, Hiroshi · Inventors: Sato, Hiroshi; Nakatsugawa, Tomomi; Sakaki, Mamoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A recording medium for ink-jet recording has an ink-receiving layer comprising spherical basic magnesium carbonate, amorphous magnesium carbonate or a mixture of aluminum oxide and basic magnesium carbonate. The recording medium promises a good storage stability of recorded images, i.e. less deterioration due to indoor color changes together, with a high image density.
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 27, 1990 and granted July 30, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2012.
- 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.