Co oxidation promoters for use in fcc processes
CA 2500620 A1 · Owner: Vaarkamp, Marius · Inventors: Kelkar, Chandrashekhar P.; Madon, Rostam J.; Li, Yuejin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for controlling CO and NOx emissions during FCC processes comprises: (i) acidic oxide support, (ii) cerium oxide (iii) lanthanide oxide , other than ceria such as praseodymium oxide (iv) optionally, oxide of a metal , from Groups Ib and IIb such as copper silver and zinc and (v) precious metal such as Pt and Pd.
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 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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
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.