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Expired Canadian patentCanada

Method for treating organic and inorganic waste material

CA 1069102 A · Owner: Recyc Systems Inc. · Inventors: Cold, David M.; Mohler, Arthur M.; Mcintire, Ray G.

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

Fibrous material having utility in the production of numerous and differing products is produced from refuse by a continuous process after separation and removal of undesirable constituents such as dirt, glass, ferrous and non-ferrous metals from the refuse. Individual remaining particles are then reduced in size and suspended in a water slurry. The slurry is then subjected to centrifugal acceleration to remove any glass, metallic, or other relatively dense particles that may remain therein. The resulting slurry is sterilized by continuous cooking to thermally destroy all major pathogens and/or parasitic organisms. The solids content is then increased and additives introduced into and mixed …

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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 January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 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.
Filed—
GrantedJanuary 1, 1980
Term endedJanuary 1, 1997
Patent numberCA 1069102 A
Classification (IPC)B02C23/08

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 1, 1980Term endedJan 1, 1997

Sources & verification

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