Ink composition
CA 2100246 C · Owner: Xaar Limited · Inventors: Kruse, Jurgen M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ink jet ink especially for printing on to plain paper comprises a suspension in (a) a non aqueous solvent of (b) a disperse phase comprising: (i) a water-insoluble dyestuff which is insoluble in said solvent at the ink jet operating temperature and below; (ii) a water-insoluble resinous dispersant for the dyestuff which in the amount used is capable of forming a solution in the said solvent at the ink jet printer operating temperature; (iii) a polymeric binder to hold the dyestuff on the surface of the paper.
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 January 10, 1992 and granted October 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.