Hydroponic apparatus
CA 2108954 A1 · Owner: Yanohara, Yoshitami · Inventors: Yanohara, Yoshitami
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydroponic apparatus comprising a bed and planting panels above the bed for holding what is planted with seedlings of a plant and a culture solution is fed into each bed so that the tip of the roots of the plant growing in the planting panels is soaked therein and a wave-making part for making waves in the surface of the culture solution within the bed. The wave-making part comprises shaft disposed around the center of the bed to rotate freely a drive means, such as a motor for rotating the shaft a converting means, such as a crank member connected with the shaft so that the rotating force of the shaft is converted into reciprocating linear motion, a working member driven vertically by …
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 October 21, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2015.
- 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.