Canadian application, no grantCanada
Catalytic cracking catalyst additive
CA 2061663 A1 · Owner: Juracek, John, Jr. · Inventors: Juracek, John Jr.; Cheng, Wu-Cheng; Juracek, John, Jr.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Catalytic cracking catalyst additives which contain bayerite and/or eta alumina are added to zeolite containing catalysts that are used to process hydrocarbon feedstocks that contain nickel.
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 February 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 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.
FiledFebruary 21, 1992
GrantedNo grant recorded
Term endedFebruary 21, 2012
Patent numberCA 2061663 A1
Classification (IPC)B01J21/12 +2 more
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.