Turbine and r&o oils containing neutral rust inhibitors
CA 2276920 A1 · Owner: Ethyl Petroleum Additives Limited · Inventors: Walters, David Kenvyn; Ryan, Helen Theresa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition suitable for use as a turbine or rust and oxidation (R&O) oil comprising a major portion of a base oil and (A) at least one neutral rust inhibitor wherein the base oil has a viscosity index of greater than 80, a saturates content of greater than. 90 wt% and a sulfur content of 0.5 wt% or less.
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 6, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2021.
- 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.