Continuous composter
CA 2089305 C · Owner: 1207974 Ontario Ltd. · Inventors: Wright, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous composter comprises a train of composting in an elongate enclosed tunnel. The trays run on tracks above the level of the base of the tunnel. Garbage enters at one end of the tunnel and compost is removed from the other end. A ram shunts the trays stepwise through the tunnel. The tracks may be U-channels the webs of which are connected to tunnel side walls. The trays rest on one of the U and the other leg of the U extends over the edge of the tray to protect it from being fouled by garbage. Computer control may adjust proportions of aerating gas with recycled gas.
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 11, 1993 and granted February 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2015.
- 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.