Composting apparatus and method
CA 2117022 C · Owner: Augspurger Komm Engineering, Inc. · Inventors: Bartlett, Charles H.; Augspurger, Quent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composting apparatus is provided herein utilizing a vessel for receiving organic material which is rotatably supported. In one embodiment, the vessel comprises a body including a decomposition chamber, the body being fabricated from a section of corrugated metal pipe having helical corrugations extending around the exterior and interior wall surfaces of the pipe. In another embodiment the body, including the decomposition chamber is formed of, a particularly recited structure of a pair of containers formed of synthetic plastic material, the joint having a controlled leakage structure. In each embodiment the body, has an inlet at one end and an outlet at the opposite end. A structure is …
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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 March 4, 1994 and granted July 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2016.
- 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.