Culture soil, process for producing the same and seedling-growing peat board
CA 2180900 C · Owner: Tanoshima, Tetsuya · Inventors: Tanoshima, Tetsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a culture soil with water absorption properties comprising peat moss having fibers coated with a film of water-absorbing clay material. Such a culture soil is produced by a process comprising the steps of (a) subjecting water to a surface activation treatment; (b) suspending a water-absorbing clay material in the water obtained in step (a) to form an aqueous suspension of the clay material; (c) treating peat moss having water repellency when dried with the aqueous suspension of clay material obtained in step (b) to thereby coat fibers of the peat moss with a film of the clay material; and (d) drying the coated peat moss fibers obtained in step (c). The culture soil …
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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 July 10, 1996 and granted October 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2018.
- 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.