Pumpable anti-abrasion ink additives and printing inks containing such additives
CA 2180304 C · Owner: Rheox International Inc. · Inventors: Wisniewski, Ted; Tavares, Bruce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved pumpable anti-abrasion/slip ink additive is disclosed comprising a mixture of polytetrafluoroethylene and polyalphaolefin. As an alternative additional, material, such as phenolic resins and oils can be added to the mixture. The additives permit the less costly manufacture of printing inks most particularly heat set inks and results in print which has improved rub, slip and anti-mar characteristics.
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 July 2, 1996 and granted January 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2018.
- 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.