Liquid with coloured particles
CA 2082544 A1 · Owner: Unilever Plc · Inventors: Slemmer, Alfred Daniel; Visser, Cornelis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coloured carrier material for liquids comprises an at least partially gelatinized starch based matrix material and a colouring agent. The liquids are preferably transparent and edible, such as dressings. A process of preparing the coloured carrier material has also been described.
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 November 10, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2014.
- 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.