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Expired Canadian patentCanada

Air nozzle assembly for use in apparatus for producing glass fibers

CA 1097921 A · Owner: Nitto Boseki Co, Ltd. · Inventors: Shono, Hiroaki; Ishikawa, Shinzo; Wakasa, Isao

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Abstract From the Canadian patent

In an apparatus for producing glass fibers wherein an orifice plate formed with a great number of orifice holes in high density is provided to draw glass fibers therethrough and air nozzle means is provided for impinging air flow against the undersurface of the orifice plate so that the adjacent cones of molten glass formed on the undersurface of the orifice plate may be prevented from coalescing to each other an air nozzle assembly is provided which includes a plurality of tubular nozzles arranged in such a way that their discharge ports may be arranged in line and in parallel with the longitudinal direction of the array of orifice holes in the orifice plate and spaced apart from each …

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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 March 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 1998.
  • 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 11, 1977
GrantedMarch 24, 1981
Term endedMarch 24, 1998
Patent numberCA 1097921 A
Classification (IPC)C03B37/06 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedOct 11, 1977Patent grantedMarch 24, 1981Term endedMarch 24, 1998

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