Flower preservation
CA 1091950 A · Owner: Queen'S University At Kingston · Inventors: Romero-Sierra, Cesar; Webb, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preserving substantially any variety of flower while retaining the natural colours thereof in which the flower is, immersed in a composition comprising: at least one dehydrating alcohol an alkaline phosphate, a carboxylic acid a urea-containing compound, an alkaline citrate a silicone fluid, and optionally a silicone resin phenol, an alkaline formaldehyde sulfoxylate aluminum or magnesium, sulphate and cupric or other transitional metal sulphate for sufficient time to dehydrate the flower. Following immersion the flower is dried and, if desired coated with a silicone resin.
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
- Granted December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- 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.