Microwave moisture sensor
CA 1237171 A · Owner: Yokogawa Electric Corporation · Inventors: Ishikawa, Hirotoshi; Kiyobe, Seiichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave moisture sensor comprises a first transmission and reception system composed of first transmission and reception horn antennas disposed in confronting relation with a running sheet-like measurand interposed therebetween, and a second transmission and reception system composed of a second transmission horn antenna for re-emitting a microwave as received by the first reception horn antenna against the measurand and a, second reception horn antenna for receiving the microwave emitted by the second transmission horn antenna and having passed through the measurand. The antennas disposed on one side of the measurand are spaced from each other by a distance of n.lambda. ? .lambda./4 …
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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 May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
- 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.