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Expired Canadian patentCanada

Transparent abrasion resistant filled organo- polysiloxane coatings containing colloidal antimony oxide and colloidal silica

CA 1196120 A · Owner: Swedlow, Inc. · Inventors: Harbison, William C.; White, William H.; Nelson, Gary L.

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

A coating composition which confers a transparent abrasion resistant film on a coated article is disclosed. The composition comprises colloidal silica and antimony oxide in a water-alcohol solution of a partial condensate of an organosilanol.

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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 October 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 6, 1982
GrantedOctober 29, 1985
Term endedOctober 29, 2002
Patent numberCA 1196120 A
Classification (IPC)B32B27/08 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedOct 6, 1982Patent grantedOct 29, 1985Term endedOct 29, 2002

Sources & verification

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