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Expired Canadian patentCanada

Apparatus for oxidizing oil

CA 60698 A · Owner: Rosenblum, Sigmund · Inventors: Rideal, Samuel; Rosenblum, Sigmund

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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.

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Why it's free to use

  • Granted July 22, 1898. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 1915.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 29, 1897
GrantedJuly 22, 1898
Term endedJuly 22, 1915
Patent numberCA 60698 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

189819001902190419061908191019121914Application filedDec 29, 1897Patent grantedJuly 22, 1898Term endedJuly 22, 1915

Sources & verification

Official CIPO records

Canadian Patents DatabaseClaims, description, documents and status.CIPO

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