Lubricant compositions
CA 2002252 C · Owner: Novartis Ag · Inventors: Zinke, Horst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions containing, a) a lubricant or a hydraulic fluid and b) an effective amount of a triaryl thionophosphate mixture of the formula I in which x is 0 to 2.7, m is 3-(x+n) and n is 0 to 3-(x+m) and x+m+n is 3 R1, R2, R3, R4, R5, R6, R8 and R9, independently of one another being, for , example, H, alkyl having 1 to 18 C atoms cycloalkyl having 5 to 12 C atoms, phenyl or phenyl-C1-C3alkyl and R4 and R7, independently of one another being alkyl , having 1 to, 18 C atoms, cycloalkyl having 5 to 12 C atoms phenyl or phenyl-C1-C3alkyl, subject to the proviso that x and n are nat 0 at the same time that at least two of the , radicals Ar1 Ar2, and Ar3 are different from one another and that …
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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 6, 1989 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2011.
- 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.