Method for controlling corrosion using molybdate compositions
CA 1338825 C · Owner: Calgon Corporation · Inventors: Rey, Susan P.; Boffardi, Bennett P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for inhibiting corrosion in aqueous systems comprising adding to the system being treated an effective amount of a composition comprising a molybdate ion source and a water-soluble component selected from polymaleic acid anhydride amine adducts, of polymaleic anhydride maleic anhydride copolymers, carboxylic acid/sulfonic acid polymers salts of the, above-described polymers phosphonates, phosphino, carboxylic acids polyphosphoric acid and esters of, polyphosphoric acid.
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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
- Granted January 7, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 2014.
- 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.