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Expired Canadian patentCanada

Method and apparatus for producing desired fiber column configuration

CA 1320027 C · Owner: Rubright, Kent Arthur · Inventors: Smalley, Rodney Roger; Shisler, Donald Eugene; Rubright, Kent Arthur

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 rotary fiberization method and apparatus. Gas and/or liquid may be introduced into the void area produced by a rotary fiberization process. The gas and/or liquid may be used to alter the configuration of the fiber column and to apply desired materials to the 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 July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 27, 1989
GrantedJuly 13, 1993
Term endedJuly 13, 2010
Patent numberCA 1320027 C
Classification (IPC)C03B37/04 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJan 27, 1989Patent grantedJuly 13, 1993Term endedJuly 13, 2010

Sources & verification

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