Expired Canadian patentCanada
Method and apparatus for reducing a nitrogen oxide, and control thereof
CA 2487110 C · Owner: Morris, Patricia A. · Inventors: Steichen, John Carl; Morris, Patricia A.; Barnes, John James
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a method and apparatus for reducing a nitrogen oxide and , the control thereof.
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 June 19, 2003 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 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.
FiledJune 19, 2003
GrantedAugust 21, 2012
Term endedJune 19, 2023
Patent numberCA 2487110 C
Classification (IPC)B01D53/86 +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.