Processes for manufacturing pigment granules used in the colouring of concrete
CA 2263667 C · Owner: Jacoulet, Marie-Paule · Inventors: Jungk, Axel E.; Roberts, Mark; Fortin, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of pigment granules including the following steps: a) obtain a mixture in the form of a liquid suspension of an emulsion and/or a paste, the said mixture including at least one pigment and at least one binder selected among the group comprising organic compounds which form insoluble films after drying and/or by chemical reaction during drying the binder(s) selected so that the films formed are devoid of dispersive effect in concrete and b) drying the said mixture. The granules obtained are resistant to humidity and are used as a pigment for concrete.
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 March 15, 1999 and granted February 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2021.
- 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.