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Expired Canadian patentCanada

Increasing chloroethylphosphonic acid-induced ethylene response in plants

CA 1082941 A · Owner: Diamond Shamrock Corporation · Inventors: Ku, Han S.; Holm, Robert E.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A composition consisting essentially of 2-chloroethylphosphonic acid and certain imides carbamates, or, tetrachloroisophthalonitrile increases the ability of, 2-chloroethylphosphonic acid alone to cause the release of ethylene in plant tissue when applied to same.

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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 August 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 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.
FiledJuly 28, 1976
GrantedAugust 5, 1980
Term endedAugust 5, 1997
Patent numberCA 1082941 A
Classification (IPC)A01N57/00 +1 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedJuly 28, 1976Patent grantedAug 5, 1980Term endedAug 5, 1997

Sources & verification

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