Lubricating oil composition
CA 1207315 A · Owner: Atlantic Richfield Company · Inventors: Williams, John S.; Wulfers, Thomas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lubricating oil composition comprising a major amount by weight of paraffinic oil of lubricating viscosity and a minor amount of at least one of certain substituted phenols. Such substituted phenol is present in of amount sufficient to improve the additive compatibility of such lubricating oil 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 July 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 2003.
- 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.