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Expired Canadian patentCanada

Method for improving reproductive functions in mammals

CA 1340653 C · Owner: Kwiecinski, Gary G. · Inventors: Kwiecinski, Gary G.; Deluca, Hector F.

CIPO record

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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 method of improving the fertility and re-productive capacity of male and female mammals by administering an amount of a vitamin D compound such, as vitamin D3, its active form 1,25-dihydroxyvitamin D3 or other compounds exhibiting vitamin D-like activity to the mammal.

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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 13, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2016.
  • 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, 1989
GrantedJuly 13, 1999
Term endedJuly 13, 2016
Patent numberCA 1340653 C
Classification (IPC)A61K31/59

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJune 23, 1989Patent grantedJuly 13, 1999Term endedJuly 13, 2016

Sources & verification

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