Lubricant composition
CA 1097320 A · Owner: Exxon Research And Engineering Company · Inventors: Shaub, Harold; Waddey, Walter E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A storage stable lubricating composition having improved anti-friction and anti-wear properties is provided by a base oil composition containing an additive combination of (1) a zinc dihydrocarbyl dithiophosphate (2) an ester of, a polycarboxylic acid and a glycol and (3) an ashless dispersant containing a high molecular weight aliphatic hydrocarbon oil solubilizing group attached thereto and wherein either the zinc or ester component or both are predispersed prior to adding them to the lubricating 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 March 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.