Patent Yard Sign in
Expired Canadian patentCanada

Preservative oil for metal surfaces and method

CA 1293612 C · Owner: Johnston, Alan Arthur · Inventors: Cuellar, John Patrick Jr.; Johnston, Alan Arthur

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

The invention comprises a preservative composition for metal surfaces comprising at least one substance known to function to protect metal surfaces against corrosion and a jojoba oil compound in an amount sufficient to form a matrix entrapping and maintaining said protective substance on said metal surfaces, and the method of protecting metal surfaces against corrosion utilizing the composition.

Read the whole patent

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 December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
  • 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 30, 1987
GrantedDecember 31, 1991
Term endedDecember 31, 2008
Patent numberCA 1293612 C
Classification (IPC)C23F11/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 30, 1987Patent grantedDec 31, 1991Term endedDec 31, 2008

Sources & verification

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