Expired Canadian patentCanada
Gas analysis
CA 1319595 C · Owner: Kinrade, John D. · Inventors: Kinrade, John D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The interference of ozone in the determination of nitrogen dioxide determinations by luminol chemiluminescence is eliminated by first passing the gas sample into contact with a selective reducing agent for ozone, particularly antimony trioxide.
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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
- Granted June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- 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 10, 1988
GrantedJune 29, 1993
Term endedJune 29, 2010
Patent numberCA 1319595 C
Classification (IPC)G01N21/76
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.