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Expired Canadian patentCanada

Thermoplastic elastomeric composition, product and method of manufacture

CA 1160386 A · Owner: Phillips Petroleum Company · Inventors: Siedenstrang, Roy W.; Thorsrud, Agmund K.

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Abstract From the Canadian patent

An unvulcanized moldable composition comprising 100 parts by weight of a thermoplastic elastomer, at least about 10 parts by weight of an extender oil per 100 parts by weight of the thermoplastic elastomer and at least about 20 parts by weight of a solid, hygroscopic filler having greater than 1, percent by weight of absorbed water and capable of retaining a substantial portion of such water at temperatures of at least 100°C per 100 parts by, weight of the thermoplastic elastomer the ratio of the oil to the hygroscopic filler being from about 0.3 to about 3. A method of flow molding by exposure to microwave energy while applying pressures below about 200 psi and a molded article of …

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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 January 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 2001.
  • 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 20, 1980
GrantedJanuary 10, 1984
Term endedJanuary 10, 2001
Patent numberCA 1160386 A
Classification (IPC)C08L53/02 +1 more

Timeline

Timeline From CIPO dates

1981198419871990199319961999Application filedOct 20, 1980Patent grantedJan 10, 1984Term endedJan 10, 2001

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