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Expired Canadian patentCanada

Internal blower for expanding cylindrical veil of mineral fibers

CA 1265342 C · Owner: Kaveh, Farrokh · Inventors: Goodridge, Paul A.; Bilen, Roger J.; Kaveh, Farrokh

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

A downwardly moving cylindrical veil of mineral fibers is distributed to form a mineral fiber product by impinging on the interior of the veil jets of gas from an internal blower positioned within the veil to increase the angular velocity of the veil, thereby causing the veil to break up into an incoherent flow of mineral fibers.

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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 February 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 2007.
  • 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 17, 1986
GrantedFebruary 6, 1990
Term endedFebruary 6, 2007
Patent numberCA 1265342 C
Classification (IPC)C03B37/04

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedOct 17, 1986Patent grantedFeb 6, 1990Term endedFeb 6, 2007

Sources & verification

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