Expired Canadian patentCanada
Foliar applications of urea-polyphosphate-potassium solutions to crops
CA 1083375 A · Owner: Allied Chemical Corporation · Inventors: Clapp, John G. Jr.; Sansing, James E. Jr.; Johnson, Donald L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Urea-polyphosphate-potassium solution is applied to foliage of field crops such as soybeans between, flowering and seed set to increase yields. -1-
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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 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 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.
FiledAugust 6, 1976
GrantedAugust 12, 1980
Term endedAugust 12, 1997
Patent numberCA 1083375 A
Classification (IPC)C05B15/00 +1 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.