Organo transition metal salt/ashless detergent- dispersant phenolic antioxidant combinations
CA 1189307 A · Owner: The Lubrizol Corporation · Inventors: Tupa, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions comprising the combination of a transition metal salt of an organic acid a hydrocarbon-, soluble ashless dispersant and a phenolic antioxidant are, useful in treating lubricants and fuels. Typical compositions comprise manganese carboxylates, acylated nitrogencontaining dispersants and a hindered phenolic antioxidant.
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 June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
- 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.