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Expired Canadian patentCanada

Polyether compounds, their production and their medicinal use

CA 1111453 A · Owner: Bayer Aktiengesellschaft · Inventors: Steinert, Gerd; Sitt, Rudiger; Krause, Hans P.

CIPO record

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Abstract From the Canadian patent

NEW POLYETHER COMPOUNDS, THEIR PRODUCTION AND THEIR MEDICINAL USE.", * * *, Abstract of the Disclosure The invention includes polymeric oxyalkenes (polyethers) having a molecular weight from 3000 to 5000 and having a propylene oxide: ethylene oxide ratio of 60 to 80: 40 to 20. The compounds are useful for treating disorders in fat metabolism and carbohydrate metabolism. Also included in the invention are methods for making said polyethers compositions, containing them and methods of use.

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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 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 20, 1978
GrantedOctober 27, 1981
Term endedOctober 27, 1998
Patent numberCA 1111453 A
Classification (IPC)C07C43/10 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJuly 20, 1978Patent grantedOct 27, 1981Term endedOct 27, 1998

Sources & verification

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