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Expired Canadian patentCanada

Gel preparations for external application

CA 1209479 A · Owner: Toko Yakuhin Industry Co. Ltd. · Inventors: Kamishita, Takuzo

CIPO record

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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 gel preparation for external application by being prepared from diclofenac sodium as the active ingredient water, lower alkanols and glycols as medium a carboxyvinyl, polymer as gelating agent a weak basic substances and, optionally adding peppermint oil ?-menthol or salicylic, acid ester as auxiliary agent.

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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 August 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 14, 1983
GrantedAugust 12, 1986
Term endedAugust 12, 2003
Patent numberCA 1209479 A
Classification (IPC)A61K31/19

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedDec 14, 1983Patent grantedAug 12, 1986Term endedAug 12, 2003

Sources & verification

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