Air contamination monitor
CA 2250685 C · Owner: Alliedsignal Inc. · Inventors: Fox, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air contamination monitor includes a sample heater connectable to an air source such as an aircraft engine bleed air port. The heater causes any oil and other hydrocarbons in the sample air to decompose into CO2 and H2O. A vacuum pump draws the heated air sample from the heater to a carbon dioxide analyzer. The response of the analyzer is recorded by means of a strip chart or paperless recorder.
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 March 26, 1997 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2019.
- 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.