Weed barrier tile
CA 2370571 A1 · Owner: Carkner, Steven · Inventors: Carkner, Steven
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reusable tile to be placed upon the ground to control weed growth is disclosed. The tile is, preferably water permeable light impermeable, decorative, and dense enough to prevent adverse, weather from dislodging the tile. Holes and slots with various inserts provide for accommodation of, a variety of plants. A plurality of perforated protrusions couple the tile to the soil and also allows, water penetration below the tile and into the soil. The tile can further preferably be fastened to other, tiles such that an area of virtually any size and shape can be covered while maintaining an effective, low-maintenance weed barrier.
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 February 8, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2024.
- 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.