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Expired Canadian patentCanada

Hair treating composition containing cationic organic polymer and carboxyfunctional silicone

CA 1270443 C · Owner: Homan, Gary Rex · Inventors: Cornwall, Susan Mary; Homan, Gary Rex

CIPO record

Overview

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

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Abstract From the Canadian patent

Hair care compositions are disclosed containing a combination of carboxyfunctional polydimethylsiloxane and a cationic, organic polymer. The compositions can be used as hair fixatives and as such may be formulated into aerosol pump spray, lotion, cream or mousse type hair care products. The compositions are especially effective in providing flexible, long-lasting hold to hair styles.

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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 June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 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.
FiledAugust 19, 1986
GrantedJune 19, 1990
Term endedJune 19, 2007
Patent numberCA 1270443 C
Classification (IPC)A61K8/73 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedAug 19, 1986Patent grantedJune 19, 1990Term endedJune 19, 2007

Sources & verification

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