Device and method for composting
CA 2441658 C · Owner: Cruson, Brian A. · Inventors: Booy, Michael P.; Cruson, Brian A.; Peakman, Ken
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composter device is provided including a mixer and a grinder commonly driven and commonly located in a composting chamber of the device. A large opening at the top of the composting chamber permits large objects to be inserted into the chamber to permit the object to be ground and left to decompose to produce compost material in the same chamber. The grinder includes grinding elements arranged to produce a shearing action while the mixer includes an auger to produce a churning action when the ground matter requires periodic mixing during the decomposition process to produce compost.
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 September 19, 2003 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 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.