Lubricating compositions
CA 1284987 C · Owner: Ciba-Geigy Ag · Inventors: O'Neil, Robert M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lubricating Compositions, Abstract of the Disclosure New lubricating oil compositions having excellent anti-corrosive properties and excellent oxidative stability comprise a major amount of a minral lubricating oil; and a minor functionally-effective, amount of an additive composition comprising; A) a hydroxyalkyl alkanolamine corrosion inhibitor; B a phenolic antioxidant and/or C) an amine-type antioxidant; ant D) an azole-type metal deactivator.
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 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2008.
- 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.