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Expired Canadian patentCanada

Separation equipment

CA 1112583 A · Owner: British Petroleum Company Limited (The) · Inventors: Martin, David E.

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

Coalescer cartridge comprises a fixed end support plate, a moveable end support plate attached to an actuating rod and a plurality of fibres or bundles of fibres. Each fibre or bundle is secured at one end to one end plate and at its other end to the other end plate. In use the end plates are positioned close to one another by movement of the rod so that the fibres are compressed together to form a fine network. The cartridge is suitable for use in coalescing emulsions of oil and water and removing any suspended solids. When the cartridge becomes blocked it is easily regenerated by causing relative motion between the end plates to stretch the fibres and open up the network. Contaminants are …

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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 November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 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.
FiledMarch 28, 1979
GrantedNovember 17, 1981
Term endedNovember 17, 1998
Patent numberCA 1112583 A
Classification (IPC)B01D17/02 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMarch 28, 1979Patent grantedNov 17, 1981Term endedNov 17, 1998

Sources & verification

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