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Expired Canadian patentCanada

Moulded articles

CA 1190946 A · Owner: Didier-Werke A.G. · Inventors: Eschner, Axel; Stein, Hermann

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 moulded article is manufactured by mixing 100 parts by weight of loosened ceramic fibres or of, a mixture comprising at least 20% by weight loosened ceramic fibres and up to 80% by weight of a fired bonded granular material comprising ceramic fibres bonding agent and refractory materials together, with 0 to 2 parts by weight clay or other finely divided refractory substances, 2 to 8 parts by weight phosphate bonding agent, 0 to 10 parts by weight, organic bonding agent and water. The mixture is compressed whilst simultaneously moulding it to the desired shape and the moulded article is then dried and/or tempered and/or fired. The article has a density of 0.5 to 1.8 g/cm3 and a hot bending …

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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 July 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.
FiledFebruary 15, 1982
GrantedJuly 23, 1985
Term endedJuly 23, 2002
Patent numberCA 1190946 A
Classification (IPC)C04B35/80 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedFeb 15, 1982Patent grantedJuly 23, 1985Term endedJuly 23, 2002

Sources & verification

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