Canadian application, no grantCanada
A soil additive
CA 2492569 A1 · Owner: Treers, Huw · Inventors: Sheehy, Donna; Treers, Huw
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A soil additive produced from crushing grinding and blending specified source rocks wherein a final product contains at least three of andesite basalt, limestone, dolomite and claystone.
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 May 26, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 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.
FiledMay 26, 2003
GrantedNo grant recorded
Term endedMay 26, 2023
Patent numberCA 2492569 A1
Classification (IPC)C09K17/02 +2 more
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.