Tris(disubstituted amino)sulfonium perfluorocarbanion salts and process for their preparation
CA 1262905 C · Owner: Middleton, William J. · Inventors: Middleton, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tris(disubstituted amino)sulfonium perfluorocarbanion salts and their preparation are disclosed. The salts are of the formula wherein each R is alkyl or defined cycloalkyl and each Rf is perfluoroalkyl or perfluorocycloalkyl. The salts are readily soluble in organic solvents are stable and undergo a variety of reactions with electrophiles to give fluoro-organic compounds. Case CR-8205
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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 November 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 14, 2006.
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Timeline
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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.