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Expired Canadian patentCanada

Apparatuses in the manufacture of mineral wool

CA 1278686 C · Owner: Oy Partek Ab · Inventors: Moisala, Tapio; Gustafsson, Jukka

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

The disclosure relates to an apparatus for preventing the solidification and accumulation of material from the tapping jet in and on the tapping spout in the manufacture of mineral wool. At the discharge section of the tapping spout to the spinning machine there is disposed at least one so-called oxy-fuel burner. The burner is, in this arrangment disposed at such a, distance and directed such that the discharge section of the tapping spout and the first portion of the tapping jet departing from the spout are heated by the burner flame and the impulse of the burner flame is of such a size that the configuration and position of the jet will remain unaffected.

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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 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 29, 1986
GrantedJanuary 8, 1991
Term endedJanuary 8, 2008
Patent numberCA 1278686 C
Classification (IPC)C03B37/05 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 29, 1986Patent grantedJan 8, 1991Term endedJan 8, 2008

Sources & verification

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