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Expired Canadian patentCanada

Agent for the treatment of fibers

CA 1317074 C · Owner: Ozaki, Masaru · Inventors: Ona, Isao; Tanaka, Osamu; Ozaki, Masaru

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

The fiber treatment agent of this invention has as its major silicone component an organopolysiloxane microemulsion which is produced by the emulsion polymerization of an organopolysiloxane which has an average particle size of 0.15 micrometers, and for which the extracted organopolysiloxane has a viscosity of at least 100 centistokes at 25°C. As a consequence the fiber treatment agent of this invention characteristically has an excellent mechanical stability dilution stability and blending stability and will not cause, the appearance of oil spots on the treated fiber.

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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 May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
  • 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 14, 1987
GrantedMay 4, 1993
Term endedMay 4, 2010
Patent numberCA 1317074 C
Classification (IPC)D06M15/64 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 14, 1987Patent grantedMay 4, 1993Term endedMay 4, 2010

Sources & verification

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