Composition based on an organic sol of tetravalent metal oxide and an organic alkaline-earth compound
CA 2303137 A1 · Owner: Rhodia Chimie · Inventors: Blanchard, Gilbert; Birchem, Thierry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a composition comprising an organic sol of particles of at least one tetravalent metal oxide and at least an organic compound of at least one alkaline-earth. The composition may further contain at least an organic compound of at least an alkaline. The tetravalent metal is more particularly cerium. The invention also concerns the use of said composition as additive of hydrocarbon 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 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2020.
- 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.