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Expired Canadian patentCanada

.alpha.-SUBSTITUTED 3,3,3-TRIFLUORO-2,2-DICHLORO-1- PROPANOLS AND THE PREPARATION THEREOF

CA 1269667 C · Owner: Lang, Robert W. · Inventors: Lang, Robert W.

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Abstract From the Canadian patent

17 -, 6-14815/+, Abstract of the Disclosure .alpha.-Substituted 3,3.3-trifluoro-2,2-dichloro-1-propanol and the preparation thereof. The invention relates to 1-propanols of formula I F3C-CCl2-?H-OH (I), wherein R is an unsubstituted or substituted aliphatic or aromatic hydrocarbon radical containing I to 30 carbon atoms or an unsubstituted or substituted aliphatic or aromatic heterocyclic radical containing 4, to 8 ring members and 1 to 3 hetero atoms from the group 0 N and S, whereby the heterocyclic radical is attached through a carbon atom to the .alpha.-C-atom in formula I. These compounds are intermediates for the synthesis of organic compounds.

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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 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 27, 1985
GrantedMay 29, 1990
Term endedMay 29, 2007
Patent numberCA 1269667 C
Classification (IPC)C07C31/38 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMarch 27, 1985Patent grantedMay 29, 1990Term endedMay 29, 2007

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.