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Expired Canadian patentCanada

Hydroponic growth system

CA 1315553 C · Owner: Harvey, Roy · Inventors: Harvey, Roy

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

There is disclosed a structure for supporting the growth of plants, comprising a flexible tubular element in the wall of which slits are provided. Closure means define with the tubular element an elongated enclosed area that is filled with a fluid and root permeable material for supporting the roots of plants. A fluid nutrient is supplied by a pump to the material. The tubular element may be suspended from one of its ends and supplied at the upper end with the fluid nutrient to support plant growth through the perforations from the particulate material. The construction is cheaply and easily manufactured, and easily used by a lay person.

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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 April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 1985
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315553 C
Classification (IPC)A01G31/02 +1 more

Timeline

Timeline From CIPO dates

198619891992199519982001200420072010Application filedNov 15, 1985Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.