Photochemical transformation of metallic and non-metallic ions in an aqueous environment
CA 2437489 C · Owner: Mester, Zoltan · Inventors: Mester, Zoltan; Guo, Xuming; Sturgeon, Ralph E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention comprises a method of photochemical transformation of metallic and non- metallic ions in an aqueous environment. The method comprises exposing the ions to UV irradiation in the presence of an organic acid. The aqueous ions are reduced by the method and may form hydrides alkyl or carbonyl compounds.
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 August 18, 2003 and granted June 19, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2025.
- 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.