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Expired Canadian patentCanada

Friction coating and sealant for threaded parts

CA 1065081 A · Owner: Oakland Corporation (The) · Inventors: Reegen, Sidney L.; Wallace, Richard B.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A viscous non-tacky friction coating or deposit is provided on the threads of a threaded part to frictionally oppose separation of the coated part from a mating threaded member. The coating comprises a mixture of one or more suitable acrylic resins, and silicone or a polyamide. In one embodiment the resin includes finely divided material such as nylon plastic which cooperates with the viscous resin material to provide a sealant impervious to relatively high gas pressure.

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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 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 23, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedOctober 23, 1979
Term endedOctober 23, 1996
Patent numberCA 1065081 A
Classification (IPC)C08L33/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedOct 23, 1979Term endedOct 23, 1996

Sources & verification

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