Twisted pairs communications cable
CA 2206022 C · Owner: Hayes, Trent · Inventors: Hayes, Trent; Wessels, Rob
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a communications cable having a cable jacket and a first pair of twisted wires disposed within the jacket, each wire thereof having a conductor surrounded by a first insulating material. A second twisted pair of wires is disposed within the jacket and has a twist lay length different from that of the first twisted pair. Each wire of the second twisted pair has a conductor surrounded by an insulating material. The insulating material of the first twisted pair differs in a physical property from the insulating material of the second twisted pair the, physical property of the insulating material of the second pair being correlated with the physical property of the insulating …
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, and the Claude kit works from them.
Why it's free to use
- Filed May 23, 1997 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2019.
- 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.