Corrosion inhibitor for salt-based deicing compositions
CA 1315971 C · Owner: Garber, Frank R. · Inventors: Garber, Frank R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A deicing composition is provided which comprises a solid mixture of sodium chloride and a corrosion inhibitor comprising a water-soluble divalent metal ion and an alkali metal polyphosphate selected from the group consisting of tripolyphosphate pyro-, phosphate, hexametaphosphate and mixtures thereof wherein the inhibitor is present in an amount effective to reduce the rate of corrosion of ferrous metals by aqueous sodium chloride solutions.
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 April 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 2010.
- 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.