Antirust additives for lubrificants or greases based on perfluoropolyethers
CA 1316923 C · Owner: Corti, Costante · Inventors: Corti, Costante; Strepparola, Ezio; Gavezotti, Piero
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antirust additive for lubricants based on perfluoropolyethers, comprising one of the fluoropolyethereal compounds having functionalized end groups selected from -CN -CH2NR1R2 and , and in particular a combination of these with little amounts of a fluoropolyether with acid end groups.
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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
- 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.