Optical fiber cable which includes waterblocking and freeze preventing provisions
CA 2107983 A1 · Owner: Arroyo, Candido John · Inventors: Arroyo, Candido John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Summary of the Invention, The foregoing problems of the prior art have been overcome by cables of this invention. An optical fiber cable (20) includes a core (22) comprising at least one optical fiber transmission medium (25) a tubular, member (28) in which is disposed the core (22) and which is made of a plastic material and a sheath (32) system which is disposed about the tubular member (28). Additionally, a compositional blend is disposed in the tubular member (28) and capable of performing dual functions by blocking the longitudinal flow of water as well as preventing freezing of water or moisture within the cable. Preferably, the composition includes a superabsorbent …
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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
- Filed October 7, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 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.