Substituted trifluorooxetane and preparation thereof
CA 1237441 A · Owner: Daikin Industries, Ltd. · Inventors: Ohsaka, Yohnosuke; Takaki, Shoji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The invention provides a substituted trifluorooxetane of the formula:, (I), or, (II), wherein Rf is a C1-C10 perfluoroalkyl group which optionally contains at least one ether linkage or a group, of the formula:, (III), wherein Rf' is a C1-C10 perfluoroalkyl group which optionally contains at least one ether linkage and n, is an integer of 1 to 10. These compounds are useful as solvents or as monomers useful for the production of polymers.
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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
- Granted May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.