Lubricating oil compositions
CA 2599286 C · Owner: Glyde, Roger Woodgate · Inventors: Lawrence, Brian; Glyde, Roger Woodgate
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An internal combustion engine crankcase lubricating oil composition has a TBN no greater than 6 and contains the following additives: a metal detergent system having a metal ratio no greater than 3 as the sole detergent system; , an organic ashless friction modifier; an oil-soluble molybdenum friction modifier; and a metal dihydrocarbyl dithiophosphate.
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 February 23, 2006 and granted December 31, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.