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Expired Canadian patentCanada

Benzylalcohol derivatives and processes for preparing the same

CA 1075264 A · Owner: Tanabe Seiyaku Co. · Inventors: Nagao, Taku; Nakajima, Hiromichi; Okazaki, Yasushi

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A compound of the formula: I, wherein R is lower alykl, may be prepared for example, by reducing, a compound of the formula: or, wherein R is same as above, Other methods for preparing the compound I are also disclosed. The compound I and a pharmaceutically acceptable acid addition salt thereof are useful as anti-diabetic agents. - 1 -

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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 April 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 8, 1980
Term endedApril 8, 1997
Patent numberCA 1075264 A
Classification (IPC)C07D303/22 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedApril 8, 1980Term endedApril 8, 1997

Sources & verification

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