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Expired Canadian patentCanada

Extruder head for making a patterned block of an ice cream product

CA 1290974 C · Owner: Hoy, Norman A. E. · Inventors: Hoy, Norman A. 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

Abstract, An extruder head for differently coloured streams of an ice cream product feeds these streams through a series of interlaced tubes and subtubes to a mould over which a carton is placed to receive a block of the product. The mould is divided into a series of compartments that depict a desired pattern of different colours for the block.

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 23, 1988
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290974 C
Classification (IPC)A23P1/12 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedJune 23, 1988Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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