Pigment concentrate
CA 2360075 A1 · Owner: Carlier, Stephane · Inventors: Carlier, Stephane; Couperus, Anja; Groenman, Tjerk
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for preparing a pigment concentrate which is suitable in particular, for the preparation of a powder coating. The pigment concentrate is prepared by pigment particles being comminuted in the presence of an aqueous binder essentially consisting of a polyester having a glass transition temperature of at least 60 ~C and an acid value of at least 60 to form a stable paste or , suspension the said paste or suspension formed being subjected to a drying treatment, and the pigment concentrate being collected. The binder used is preferably free of cosolvent, while expediently it is a resin having an acid value of at least 70. Preferably, no dispersant is used. By using a pigment …
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 21, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2022.
- 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.