Galvanized steel sheet with high press formability and a method for manufacturing the same
CA 2033862 C · Owner: Kato, Chiaki · Inventors: Kato, Chiaki; Morito, Nobuyuki; Tobiyama, Yoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a galvanized steel sheet with high press formability, which has an inorganic compound on a metallic galvanized layer thereof. The galvanized steel sheet according to the present invention is manufactured by bringing a plating surface of the galvanized steel sheet into contact with a water solution containing 0.1 wt% or more of the organic compound, and then drying the steel sheet by heating within a temperature range of 60 to 400°C. The friction coefficient of the galvanized steel sheet of the invention is 80% or less of the friction coefficient obtained without the inorganic compound on the metallic galvanized layer and the amount of insoluble slimes of the inorganic …
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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 January 9, 1991 and granted May 11, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 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
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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.