Microemulsions containing perfluoropolyethers
CA 1294847 C · Owner: Ausimont S.P.A. · Inventors: Visca, Mario; Chittofrati, Alba
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Microemulsions based on perfluoropolyethers comprising:, - an aqueous medium, - a perfluoropolyether having a mean molecular weight from 400 to 10,000, and perfluoroalkyl end groups; - a fluorinated surfactant, and optionally also a short-chain hydrogenated alcohol or a fluo roalkanol, or a water-soluble salt, said microemulsions being per manently stable in a certain temperature range in which they are, preparable by simple mixing of the components. - 1 -
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 January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2009.
- 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.