Package of optical fiber suitable for high speed payout
CA 2099736 C · Owner: Darsey, Ralph Joel · Inventors: Darsey, Ralph Joel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
An optical fiber package (15) includes a support surface such as a hub of a bobbin (17) for convolutions of a length of optical fiber. The optical fiber includes a light transmitting portion such as a core and a cladding with inner and outer layers of coating material disposed thereabout. The coating material comprises an ultraviolet light curable material. Disposed throughout the curable coating material of the outer layer is an adhesive constituent which after having been solidified by the exposure of the optical fiber to ultraviolet light energy and subsequent to the winding of the optical fiber into a package for use in high speed payout is subjected to heat treatment to cause the …
Read the whole patent
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.
Why it's free to use
- Filed June 29, 1993 and granted September 23, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.