Method for enhancing the dielectric strength of cable using fluid having a high diffusion coefficient
CA 2120906 C · Owner: Kleyer, Don Lee · Inventors: Kleyer, Don Lee; Chatterton, Wayne Joseph; Vincent, Gary Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for enhancing the dielectric properties of new or in-service electrical cable is disclosed the method comprising supplying the interstitial void space of the cable's conductor with a water-reactive antitreeing agent having a diffusion coefficient of at least 1 x 100 -7 cm2/second at 50ÀC. in the insulation of the cable end having an initial viscosity of <= 100 cP (mPa~s) at 25ÀC. The instant method provides a more symmetrical distribution of dielectric enhancing fluid in the insulation than prior art approaches and results in a significant reduction in cable treatment time.
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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 April 19, 1994 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2016.
- 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.