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Expired Canadian patentCanada

Starch and products produced therefrom

CA 1305472 C · Owner: Friedman, Robert B. · Inventors: Friedman, Robert B.; Gottneid, David J.; Katz, Frances R.

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 of the Disclosure, A substantially pure starch extracted from a starch bearing plant having an amylose extender dull shrunken-1 genotype is disclosed. Maize is the preferred plant. A sol and foodstuff containing the starch are disclosed.

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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 July 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 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.
FiledMay 25, 1988
GrantedJuly 21, 1992
Term endedJuly 21, 2009
Patent numberCA 1305472 C
Classification (IPC)C08B30/02 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMay 25, 1988Patent grantedJuly 21, 1992Term endedJuly 21, 2009

Sources & verification

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