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Expired Canadian patentCanada

Increased shelf-life for refrigerated fish

CA 1302149 C · Owner: Rhone-Poulenc Basic Chemicals Co. · Inventors: Everson, Charles William; Brotsky, Eugene; Swartz, William Ewing

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

Fish fillets can be storage stabilized and yield stabilized by means of a composition containing an alkali metal hexametaphosphate, an alkali metal acid pyrophosphate and an alkali metal sorbate at sorbate levels significantly less than required by prior art and without citric acid.

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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 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.
FiledJanuary 15, 1987
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302149 C
Classification (IPC)A23B4/02 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJan 15, 1987Patent grantedJune 2, 1992Term endedJune 2, 2009

Sources & verification

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