Apparatus for the conversion of waste material
CA 1077424 A · Owner: Water-Front N.V. · Inventors: Lewis, Frederick M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for the conversion of waste material by means of pyrolysis comprising a fire box in which an externally heated elongated cylindrical rotating kiln is located which kiln is provided with, means for the introduction of waste material and means for the discharge of pyrolyzed material and pyrolysis gas the kiln, being provided with an internal helical strip with a central bore the pitch of the helix near the discharge outlet for the pyrolyzed residue being smaller than the pitch near the inlet for waste material.
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
- Granted May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 1997.
- 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.