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Expired Canadian patentCanada

Process of producing dried wood chips

CA 1298802 C · Owner: Berger, Josef · Inventors: Berger, Josef

CIPO record

Overview

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

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Abstract From the Canadian patent

Wood from broad-leaved and/or coniferous woody plants, particularly bushwood or waste wood or wood obtained in wood-growing plantations is processed, in that wood in a green state is chopped to form wood chips and is mixed with accompanying or additional fermentable green plant material, which has also been comminuted. The resulting mixture is compacted to form a compacted body of plant material in a space which is airtightly are permitted to escaps. The fermentable green plant material may consist of the bark and leaves of broadleaved woody plants, of the leaves of leaved plants of grass, or of mixtures of said materials.

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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 April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 1988
GrantedApril 14, 1992
Term endedApril 14, 2009
Patent numberCA 1298802 C
Classification (IPC)C10L5/44 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 10, 1988Patent grantedApril 14, 1992Term endedApril 14, 2009

Sources & verification

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