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Expired Canadian patentCanada

Improved gasifier

CA 2568029 C · Owner: Stein, Peter · Inventors: Stein, Peter

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An apparatus and process for converting carbonaceous or other material with calorific value into high quality gas preferably to fuel a reciprocating gas engine for the generation of electricity. Wet fuel is delivered via conveyer (13) to fuel hopper (14). From the hopper the fuel is fed into the dryer (15) by a screw feeder. The dried fuel then is checked for size via a trammel (16) where the correctly sized fuel passes through and the oversized fuel goes onto the reject conveyer (22) where it is delivered for shredding. The correct sized dry fuel is transported via a conveyer (17). The fuel is then fed via a feed system, to avoid the ingress of air into the gasifier (19) provided …

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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 10, 2005 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 2005
GrantedJanuary 22, 2013
Term endedMay 10, 2025
Patent numberCA 2568029 C
Classification (IPC)F23G5/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMay 10, 2005Patent grantedJan 22, 2013Term endedMay 10, 2025

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.