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Expired Canadian patentCanada

Infrared fibers

CA 1191023 A · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Takahashi, Kenichi; Murakami, Kazuhito

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

Infrared Fibers ABSTRACT OF THE DISCLOSURE, This invention relates to an infrared fiber excellent in elongation as well as tensile strength and yield strength which comprises a mixed crystal containing 0.01 to 10 % by weight of silver chloride in silver bromide or a mixed crystal containing 0.01 to 10 % by weight of silver bromide in silver chloride.

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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 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 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.
FiledNovember 8, 1982
GrantedJuly 30, 1985
Term endedJuly 30, 2002
Patent numberCA 1191023 A
Classification (IPC)C03C4/10 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedNov 8, 1982Patent grantedJuly 30, 1985Term endedJuly 30, 2002

Sources & verification

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