Coloring agents which are soluble in aqueous media and method for the production thereof
CA 2450920 C · Owner: S.A. Color · Inventors: Boudin, Michel; Cuvilly, Yannick; Fleury, Frederic
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the production of coloring agents which are soluble in water and in aqueous vehicles. The soluble coloring agents are in particular, organic and are especially used in the food industry. The inventive coloring agents are characterized in that they are present in a solid form mixed with an effervescent agent in a binder which is essentially composed of polyethylene glycol wherein they are previously diluted at a temperature which is higher than the fusion temperature of said binder. Preferably the method for the production of said coloring agents involves a dry mixture of two constituents introduced in a powdery form prior to the heating of said mixture resulting in …
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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 June 21, 2002 and granted August 13, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2024.
- 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
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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.