Motor oil fortifier
CA 2453807 A1 · Owner: Sanborn, Robert H. · Inventors: Sanborn, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a treatment to be used as an additive to a stock lubricant. The present invention may comprise an amount of a base fluid or other fluid, such as polybutylene, naphthenic oil or a group III base , fluid and a bismuth in a non-active sulfur. The present invention formula may further comprise one or more of a defoamer a friction modifier, a detergent, a dispersant and a polyol ester. Bismuth may be a particularly good sacrificial material for use as a lubricant additive because it is heavy weight inorganic material that becomes soft at high temperatures. The preferred embodiment may utilize approximately 60% of the base fluid and approximately 30% of the …
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
- Filed July 18, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2024.
- 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.