Cold rolled steel sheet having improved bake hardenability
CA 2301722 C · Owner: Taniguchi, Hirokazu · Inventors: Taniguchi, Hirokazu; Yamazaki, Kazumasa; Goto, Koichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cold rolled steel sheets having improved bake hardenability is provided. Specifically the present invention, relates to a cold rolled steel sheet with improved bake, hardenability, comprising an ultra low carbon steel containing titanium and/or niobium, wherein the relationship between the contents of carbon and molybdenum in solid solution being regulated in a specified range, and a cold rolled steel sheet with improved bake hardenability, which further contains a specified amount of boron in addition to the above constituents.
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 April 5, 1999 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2021.
- 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.