Compost maker
CA 2117463 A1 · Owner: Favorit Oy · Inventors: Kariniemi, Pekka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compost maker comprising an upright container (1) having on its top end a cover (2) for introducing material to be composted in the container, having in its lower part a hatch (3) for removing composted material from the container, and containing an air tube system (4) for guiding air in among the material to be composted. The air tube system (4) comprises at least two tubes (5) on different heights, the lower tube being connected through the wall (6) of the container with an air intake aperture (7) and which, are interconnected with a connecting tube (8) and their lower parts provided with holes (9). Furthermore the cover (2) is fitted, with an exit duct (10) the air flowing through …
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 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 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.