Cathodic protection systems
CA 1279606 C · Owner: Scholes, Ian R. · Inventors: Hayfield, Peter C.S.; Scholes, Ian R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cathodic protection system to protect the reinforcement bars in concrete wherein there is provided as an anode a hydraulically porous material bonded to the concrete so that the anode can be irrigated by water to reduce chloride concentration. A preferred material for the anode is TiOx in bulk coherent form where x is in the range 1.6 to 1.9 preferably 1.67 to 1.85.
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
- Granted January 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.