Aqueous surface conditioner and surface conditioning method for phosphating treatment
CA 2434306 A1 · Owner: Takagi, Yasushi · Inventors: Moriya, Yoshio; Takagi, Yasushi; Suda, Arata
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous surface conditioner for use in a phosphating treatment is provided which contains crystals having an average diameter of 5 µm or less in an amount of at least 0.1 g/L. The crystals are selected to have a twodimensional epitaxy that matches within 3 % of misfit with the crystal lattice of one phosphate coating selected from among (1) hopeite /Zn3(PO4)2.4H2O) and/or phosphophyllite (Zn2Fe(PO4)2.4H2O) (2) scholzite (CaZn2(PO4)2.2H2O) , and (3) hureaulite (Mn5(PO4)2PO3(OH2.4H2O).
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
- Filed January 8, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2024.
- 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.