Method for manufacturing titanium clad steel plate
CA 2020308 C · Owner: Suenaga, Hiroyoshi · Inventors: Suenaga, Hiroyoshi; Minakawa, Kuninori; Ishikawa, Misao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufaturing titanium clad steel plate comprises the steps of inserting Ni-Cr alloy material containing 32.5 to 40 wt.% Cr and 55 to 65 wt.% Ni between alloy steel material and titanium material. a slab assembly having alloy steel material titanium, material and Ni-Cr alloy material inserted between alloy steel material and titanium material being formed heating the slab assembly at a temperature of 850 to 1010°C and hot-rolling the heated slab assembly with a reduction ratio of 30% or more.
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 July 3, 1990 and granted May 4, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2012.
- 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.