Expired Canadian patentCanada
Composite overhead stranded conductor having a filler between optical fibers and a protective tube
CA 1267009 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Kitayama, Yoshinobu
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite stranded conductor bundle in which one of the cable strands is a fiber optic unit having a protective tube enclosing a plurality of optical fibers. The protective tube is filled with a fiber filler to hold the optical 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 March 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 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.
FiledJuly 16, 1986
GrantedMarch 27, 1990
Term endedMarch 27, 2007
Patent numberCA 1267009 C
Classification (IPC)G02B6/44
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.