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Expired Canadian patentCanada

Process for gasifying organic fibrous material and the product thereof

CA 1114612 A · Owner: Gunja, Vijay Gomatam · Inventors: Gunnerman, Rudolf W.

CIPO record

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

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Abstract From the Canadian patent

A method is provided for producing a combustible gas from an organic fibrous material in which a mass of free flowing pellets containing compressed organic fibrous material is supported in a substantially enclosed space. The fuel pellets are burned while supported and while air is dispersed substantially uniformly through the burning fuel. An insulating layer of fuel pellets is maintained above the fuel which provides a temperature in the burning mass at which the fuel is substantially completely consumed without ash formation and nitrogen from the air is chemically combined with products of the combustion of the fuel to produce combustible gases containing nitrogen in admixture with …

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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

  • Granted December 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 20, 1977
GrantedDecember 22, 1981
Term endedDecember 22, 1998
Patent numberCA 1114612 A
Classification (IPC)C10J3/00 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedSep 20, 1977Patent grantedDec 22, 1981Term endedDec 22, 1998

Sources & verification

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