Recording medium and recording method using the same
CA 2013767 C · Owner: Canon Kabushiki Kaisha · Inventors: Sakaki, Mamoru; Nakatsugawa, Tomomi; Sato, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A recording medium comprises a substrate and, an ink-receiving layer provided thereon wherein the ink receiving layer contains water-insoluble and amorphous basic aluminum salt. The recording medium according to Claim 1, the basic aluminum salt is represented by the general formula (1) below: Alx(OH)yXz (1), where x, y, and z are respectively positive integers and satisfy the relations of z = 3x - y and x/z 3, and X is an acid radical.
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 3, 1990 and granted March 5, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 3, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 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.