Method for improving printability on paper or paper products with the aid of ink-jet printing method
CA 2523320 C · Owner: Bohlmann, Klaus · Inventors: Bohlmann, Klaus; Mulder, Rudi; Linhart, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for improving printability on paper or paper products with the aid of an ink-jet printing method. Said method consists in treating paper or paper products by aqueous solutions containing cationic polymers whose charge density is equal or higher than 3 mVal/g and which are used as a sole treating agent in the aqueous solution. The cationic polymer is applied to a paper or paper product surface whereby the quantity thereof , ranges from 0.05 to 5.0 g/m 2. The use of said cationic polymers in order to improve the printability by ink-jet printing on paper or paper products is also disclosed.
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 20, 2004 and granted June 19, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2026.
- 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.