Patent Yard Sign in
Expired Canadian patentCanada

Grease and gear lubricant compositions comprising at least one metal-containing composition and at least one sulfurized organic compound

CA 1290741 C · Owner: The Lubrizol Corporation · Inventors: Facchiano, David L.; Vinci, James N.

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

An additive mixture for grease compositions and gear lubricants has been developed. The additive mixture comprises at least one metal-containing composition and at least one sulfurized organic compound. This mixture has been found to impart an unexpected improvement in extreme pressure properties to grease compositions and gear lubricants.

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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 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.
FiledMarch 20, 1987
GrantedOctober 15, 1991
Term endedOctober 15, 2008
Patent numberCA 1290741 C
Classification (IPC)C10M149/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 20, 1987Patent grantedOct 15, 1991Term endedOct 15, 2008

Sources & verification

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