Anti-scale and corrosion inhibitor
CA 1338656 C · Owner: Drew Chemical Limited · Inventors: Beardwood, Edward Samuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A corrosion and scale inhibitor for an aqueous system comprising a blend of chromate, zinc, molybdate azole, phosphonate, and a polymeric anti-foulant. The soluble metallic inhibitors are utilized at very low concentrations while providing improved corrosion inhibition over known compositions.
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 October 22, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2013.
- 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.