A tree shelter
CA 2473953 A1 · Owner: Jones, Adrianne Jacqueline · Inventors: Jones, Adrianne Jacqueline
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tree shelter (1) comprises a biodegradable fibrous mat (2) coated with a degradable resin (5) and adapted to be formed into a roll which can enclose at least the lower part of a plant (11). The mat (2) is preferably non-woven and its structure is preferably impregnated with a second degradable resin (4) which degrades at a different, preferably faster rate to that of the first , degradable resin (5) under the same environmental conditions. Such a shelter (1) has the advantage that once the first resin (5) has substantially degraded over a predetermined time period to expose the mat to the weather the second , degradable resin (4) commences a faster degradation to cause the mat (2) …
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 January 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 23, 2025.
- 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.