Anesthetic agent identification analyzer and contamination detector
CA 2000305 A1 · Owner: Williams, Kevin G. · Inventors: Williams, Kevin G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gas analyzer for measuring the transmission of infrared radiation through a gas mixture determining, the concentrations of the gases in the mixture identifying one of the gases, reporting the concentration of the identified gas, and detecting contamination of the gas. The gas analyzer has a sample cell for containing the gas maxture, a source of infrared radiation a set of, specifically chosen filters, a signal processor and a, microprocesssor that computes the concentrations of the gases and implements decision logic for identifying one gas and detecting contamination of that gas. In one embodiment, a filter wheel holds the filters between the source and the sample cell and there is a …
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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
- Filed October 6, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2011.
- 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.