Protective coating of metal and product therefrom
CA 2366516 A1 · Owner: Koyama, Takashi · Inventors: Kinoshita, Yasuhiro; Koyama, Takashi; Ueno, Keiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-based liquid treatment composition for metal surfaces containing water and dissolved and/or dispersed urethane and/or acrylic resins dissolved , and/or dispersed curent agent dispersed silica powder, dispersed oxidized polyethylene wax of average particle size 0.01 to 0.2 micrometers and a , dispersing agent which is the disclosed alkyl and/or alkenyl substituted phenyl ethoxylated compound which may also contain a sulfonate group.
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 March 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 2022.
- 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.