Instrument for measuring the photosynthetic activities of plants
CA 1266997 C · Owner: The British Petroleum Company P.L.C. · Inventors: Long, Stephen P.; Baker, Neil R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Instrument for measuring the photosynthetic activities of plants, An instrument (2) for simultaneously measuring a plurality of parameters indicative of photosynthetic activity of a leaf in vivo comprises:, (a) a gas tight chamber (4) for enclosing the leaf (5) (b) means (10) for illuminating the leaf within the chamber with modulated light not capable of driving photosynthesis (c) means (14) for detecting modulated fluorescence emission from the leaf, (d) means for illuminating the leaf with photosynthetically active light, (e) means (43) for measuring the light absorbed by the leaf (f) and means (32) for measuring the rate of uptake of carbon dioxide gas by the leaf. The instrument may …
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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 March 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2007.
- 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.