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Expired Canadian patentCanada

Glass composition, its method of formation and products made therefrom

CA 1186702 A · Owner: Atlantic Richfield Company · Inventors: Mackenzie, John D.; Clough, Thomas J.

CIPO record

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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 glass composition is disclosed which is formed from a mixture comprising one or a plurality of natural mineral zeolites and having a melting point in the range of from about 1000° to about 1500°C. The glass compositions of this invention can he formed into various glass articles, including flat glass glass, containers, glass fiber and glass foam.

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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 7, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 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.
FiledMarch 29, 1982
GrantedMay 7, 1985
Term endedMay 7, 2002
Patent numberCA 1186702 A
Classification (IPC)C03C3/04 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMarch 29, 1982Patent grantedMay 7, 1985Term endedMay 7, 2002

Sources & verification

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