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Expired Canadian patentCanada

Plant growth bed with high loft textile fibers

CA 1304941 C · Owner: Hobbs Bonded Fibers · Inventors: Carpenter, Tim Dewey; Hobbs, Claude Carey

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

A plant growth bed for growing plants includes a bag formed of a relatively thin plastic sheet material impervious to passage of liquids and air therethrough with a relatively high loft bedding of crimped textile fibers substantially filling the bag. The major portion of crimped textile fibers are hydrophobic staple fibers and the remaining minor portion of the crimped textile fibers are hydrophilic fibers intermixed or blended together. The high loft of the textile fibers provides open spaces around the fibers to allow for optimum air for proper root development and plant growth. The bedding is readily compressible as for compact shipment to about 1/5 the thickness of the uncompressed high …

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1989
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1304941 C
Classification (IPC)A01G31/00

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedSep 28, 1989Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

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