Highly corrosion-resistant steel sheet for fuel tank
CA 2376115 A1 · Owner: Kamakura, Kazuhiko · Inventors: Suzuki, Sachiko; Matsuoka, Saiji; Umino, Shigeru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A steel sheet for a fuel tank having high corrosion resistance which comprises a steel sheet (1) containing 0.0007 to 0.0050 mass % of C 0.5 mass % or less , of Si, 2.0 mass % or less of Mn 0.10 mass % or less of P, 0.015 mass % or less of S, 0.01 to 0.20 mass % of Al, 0.01 mass % or less of N 0.005 to 0.08 , mass % of Ti, and 0.001 to 0.01 mass % of B zinc based plating layers (2a, 2b) and chromate layers (3a 3b) laminated in this order on both surfaces of the steel sheet respectively, a first composite film (4) comprising powders of Al and Ni and an amine-modified epoxy resin formed on a chromate layer (3a) and a second composite film (5) comprising at least one organic resin having …
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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
- Filed March 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2023.
- 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.