Deepwater in-situ fluorometer
CA 1089250 A · Owner: Impulsphysik G.M.B.H. · Inventors: Frungel, Frank; Gelbke, Eberhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An onoard power supply and metering unit is connected, via an overboard cable e.g. 1000 meters long to an, underwater light-pulse projecting unit and a fluorescence-sensing receiver unit. The operating power is transmitted to the underwater units by an onboard constant-current source instead of a, voltage source. Likewise the output signal of the receiver unit is transmitted through the cable in the form of a current not a, voltage. The current of the receiver's photodiode is integrated the peak value of the integral determined and held this held, value logarithmized, the logarithmized value sampled and held and the held voltage converted to a current constituting the output signal. The …
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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 November 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 11, 1997.
- 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.