Method and apparatus for decreasing gassing and decay of insulating oil in transformers
CA 2364277 A1 · Owner: Insoil Canada Ltd. · Inventors: Sabau, Ioan A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention deals with increasing the quality of insulating mineral oil in transformers, by, providing an isolating layer of flowing nitrogen over the oil's surface to keep ambient air, from combining or absorbing with or in the oil also providing a kidney or , alter to remove undesirable contaminants such as water oxygen, free radicals and debris from the oil, and, providing a means of sensing trace gases produced in the oil responsive to transformer, conditions and mixed with nitrogen flow to diagnose transformer conditions of interest such, as hot-spots, short circuits insulation failure or similar indicators of failure or incipient failure, or need for service the trace gas …
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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 December 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2023.
- 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.