3,3,3-trifluoropropionic acid compounds
CA 1064498 A · Owner: Imperial Chemical Industries Limited · Inventors: Mulholland, Thomas P. C.; Haydock, David B.; Thorp, Jeffrey M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fluorinated compounds of the formula: wherein Ar is a phenyl or naphthyl radical which may optionally bear as, substituent a halogen atom or an alkyl or alkoxy radical of 1-4 carbon atoms or a phenyl or phenoxy radical which may itself bear as substituent a halogen atom or an alkyl or alkoxy radical of 1-4 carbon atoms; X is a group of the formula -O.CH2- or -CH2- or a direct link between the group Ar and the adjacent oxygen atom; R1 is a hydroxy, amino or dimethylamino radical or an, alkoxy radical of 1-6 carbon atoms optionally substituted by a carbamoyl radical or an N,N-dialkylcarbamoyl or dialkylamino radical in which the alkyl radicals are of 1-6 carbon atoms, a pyridyl radical a …
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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 October 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 16, 1996.
- 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.