Expired Canadian patentCanada
Sulfur reduction in fcc gasoline
CA 2113219 C · Owner: W.R. Grace & Co.-Conn. · Inventors: Wormsbecher, Richard Franklin; Kim, Gwan
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 catalysts and catalyst additives which contain silica modified bayerite and/or eta alumina.
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 January 11, 1994 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 11, 1994
GrantedNovember 12, 2002
Term endedJanuary 11, 2014
Patent numberCA 2113219 C
Classification (IPC)B01J29/00 +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.