CH71258A
(en )
1915-12-16
Process to improve the operation of electrically operated melting furnaces for steel and iron
CH69366A
(en )
1915-06-16
Process for smelting metals and furnace for practicing this process
CH60349A
(en )
1913-07-16
Metallurgical furnace for the direct production of iron and steel from iron ores and process for its production
CH44856A
(en )
1909-09-16
Process for the deoxidation of liquid iron in electric arc furnaces
CH59939A
(en )
1913-06-16
Process and high pressure furnace for direct iron and steel production
CH79829A
(en )
1919-01-16
Process for the recovery of iron and steel waste
AT78480B
(en )
1919-09-25
Process and pan for deoxidizing iron and steel using calcium carbide.
FR532609A
(en )
1922-02-08
Process for removing carbon from iron or other metals and metal alloys
CH74657A
(en )
1917-03-16
Process for attaching firmly adhering, closed metal jackets to round bodies of iron or steel
FR511072A
(en )
1920-12-16
Metal ore concentration process
CA160606A
(en )
1915-02-09
Method of smelting iron ores
FR22597E
(en )
1921-07-23
Furnace for the direct manufacture of steel from iron ore
CH60587A
(en )
1913-08-01
Process for cementing and hardening iron and steel
FR456530A
(en )
1913-08-28
Improvements to furnaces used for roasting, smelting or other treatment of ores
FR486554A
(en )
1918-04-18
Process for the smelting of any divided metals in any furnaces
CH75790A
(en )
1917-09-17
Process for the direct production of fine iron and fine steel from titanium-containing iron ores
AT52348B
(en )
1912-02-26
Method and device for deslagging of mild iron and mild steel in a hearth furnace.
CH61243A
(en )
1913-09-16
Insert box for cementing and annealing iron and steel
CH43957A
(en )
1909-07-01
Process for reducing the carbon content of iron
FR485187A
(en )
1917-12-19
Improvements to furnaces for roasting ores
AT23795B
(en )
1906-04-10
Process for the refinement of iron ores u. like
FR451164A
(en )
1913-04-12
Carbonated iron ore roasting process
FR474249A
(en )
1915-02-12
Improvements to metal smelting furnaces
CH67012A
(en )
1914-11-02
Process for decarburizing metals
GB157705A
(en )
1922-04-10
Improved process of manufacturing refined iron or steel directly from oxidized titanic iron