| Patent Number |
Title Of Patent |
Date Issued |
| 4087289 |
Anti-vibration steel material and a production method therefor |
May 2, 1978 |
| Anti-vibration steel materials containing not more than 0.1% of carbon and not more than 0.5% of manganese and having an .alpha. value of not lower than 55, said value being a product of the yield point or stress at 0.2% strain and the grain size number, and a method for producing the sa |
| 4057989 |
Method for levelling a metal strip or sheet |
November 15, 1977 |
| A method for levelling a metal strip or sheet in which the metal strip or sheet is subjected to repeated bending by means of a roll arrangement of two or more rolls having a diameter of at least 600 times the thickness of the metal while cooling the metal strip or sheet from at least abo |
| 4046597 |
Vibration damping steel material and process for producing the same |
September 6, 1977 |
| A vibration damping steel containing C .ltoreq. 0.10% and Mn .ltoreq. 0.40% as the essential constituents and having a lower yield point or 0.2% proof stress of 7-28kg/mm.sup.2 with the degree of refinement of the steel being not less than 0.18 while still maintaining the specific gravit |
