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Expired Canadian patentCanada

Dehydrogenation process

CA 559395 A · Owner: Reilly, Park M. · Inventors: Reilly, Park M.

CIPO record

Overview

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

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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 24, 1958. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 1975.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 16, 1957
GrantedJune 24, 1958
Term endedJune 24, 1975
Patent numberCA 559395 A
Classification (IPC)C07C11/12

Timeline

Timeline From CIPO dates

195819601962196419661968197019721974Application filedApril 16, 1957Patent grantedJune 24, 1958Term endedJune 24, 1975

Sources & verification

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