Lubricating oil additive concentrates comprising phenol aldehyde condensate
CA 2527137 C · Owner: Infineum International Limited · Inventors: Bell, Ian A. W.; Fellows, Raymond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lubricating oil additive concentrates containing oil of lubricating viscosity at least one basic metal complex, an oil-soluble hydrocarbyl phenol aldehyde condensate and an organic friction modifier containing at least one hydroxyl and/or amino group.
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 November 15, 2005 and granted March 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2025.
- 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.