Method and apparatus for composting using improved charging and discharging sequence
CA 2072144 A1 · Owner: Ashbrook-Simon-Hartley Corporation · Inventors: Johnson, Richard P. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus is disclosed for composting of organic matter. A ram advances the entire mass of organic matter within the composting chamber to create an evacuated space in the composting chamber, which evacuated space is of substantially greater volume than the volume of an incremental inlet space. The incremental inlet space is a space in the composting chamber defined by a projection of an inlet opening into the composting chamber. After the creation of the evacuated space, a new charge of organic matter is fed through the inlet opening. The ram then moves this new charge of organic matter into the evacuated space in the chamber to join the existing mass of organic matter …
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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 18, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2012.
- 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.