Compost curing and odor control system
CA 2180357 C · Owner: Oyster Technologies Limited · Inventors: Finn, Larry James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compost curing and odor control system in which biofilters (60) are disposed in overlying relation to the compost curing area. The floors of both biofilters and curing area consist of a series of elongated planks (10 52), of generally trapezoidal cross-sectional configuration placed in abutting relation with the longer parallel sides of the trapezoid lying in the plane of the floor and forming between them a narrow slit through which air is passed by an underlying air plenum (14 54), in pneumatic communication.
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 22, 1996 and granted April 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2018.
- 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.