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Expired Canadian patentCanada

Method of making glass fiber forming feeders

CA 1195500 A · Owner: Owens-Corning Fiberglas Corporation · Inventors: Bhatti, Mohinder S.

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 method of making an orificed discharge wall for supplying a plurality of streams of molten inorganic material to be attenuated into filaments comprising inserting elements (85) in apertures (71) in a member (69); sealing said elements (85) and member (69) within a coating (94) adapted to isostatically transmit pressure to said assembly; applying isostatic pressure to the hermetically sealed elements (85) and member (69) to mechanically seal the elements (85) to the member (69); and heating the mechanically sealed elements (85) and member (69) to fuse the elements (85) to the member (69) to prevent the unwanted passage of molten glass between said elements and said member, said elements …

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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 October 22, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.
FiledJuly 13, 1983
GrantedOctober 22, 1985
Term endedOctober 22, 2002
Patent numberCA 1195500 A
Classification (IPC)C03B37/08 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJuly 13, 1983Patent grantedOct 22, 1985Term endedOct 22, 2002

Sources & verification

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