Cold-rolled high strength steel sheet
CA 1069806 A · Owner: Sumitomo Metal Industries, Ltd. · Inventors: Matsuoka, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are a cold-rolled high strength steel sheet having excellent cold workability under the asannealed condition which consists essentially of by weight, 0.03 - 0.2% C, 0.6 - 1.5% Si 1.3 - 3.0% Mn, 0.01 - 0.25% Nb, or 0.01 - 0.2% Ti or 0.01 - 0.3% Nb plus Ti and the remainder, of Fe with inevitable amounts of impurities and the method of, making the same. The steel sheet can be as thin as 3 mm or less while possessing a high tensile strength of 50 to 100 kg/mm2, and is extremely suitable for use as a constructional material of car bodies.
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
- Granted January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.