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Expired Canadian patentCanada

Organo-soluble ethyl hydroxyethyl cellulose and aromatic hydrocarbon resin in oil-based or water-in- oil emulsion make-up

CA 1108538 A · Owner: Shiseido Company Ltd. · Inventors: Nara, Michiko; Yamazaki, Kazunori; Akiyama, Yasuko

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 make-up cosmetic composition having good oil resistance, water resistance and adhesion which contains at, least one of (a) an organosoluble or a water- and organo-soluble ethyl hydroxyethyl cellulose and (b) an aromatic hydrocarbon resin having a softening point of at least about120°C.

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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 September 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 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.
FiledApril 12, 1978
GrantedSeptember 8, 1981
Term endedSeptember 8, 1998
Patent numberCA 1108538 A
Classification (IPC)A61K8/81 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 12, 1978Patent grantedSep 8, 1981Term endedSep 8, 1998

Sources & verification

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