CH65381A
(en )
1914-06-16
Process for obtaining iron by electrolysis of iron sulphate
CH67362A
(en )
1914-12-01
Process for obtaining copper by electrolysis of copper sulphate
CH67361A
(en )
1914-12-01
Process for obtaining zinc by electrolysis of zinc sulfate
CH76764A
(en )
1918-02-01
Process for obtaining iron by electrolysis of iron sulphate
CH61743A
(en )
1913-10-16
Process for recovering iron from a solution of its sulphate
FR475770A
(en )
1915-06-14
Advanced process for the electrolysis of iron
CH58030A
(en )
1913-02-17
Process for obtaining pure iron from cast iron
FR452961A
(en )
1913-05-28
Process for the production of ammonium sulphate from ammonium bisulphite
FR464038A
(en )
1914-03-11
Process for preparing a solution of pure zinc sulphate using zinc ores
FR386682A
(en )
1908-06-19
Process for the manufacture of sodium sulphate
FR480848A
(en )
1916-09-28
Process for the production of zinc sulphate or other zinc compounds by means of zinc ores
FR1019717A
(en )
1953-01-26
Process for the electrolytic production of iron from sulphate solutions
FR434584A
(en )
1912-02-07
Process for producing copper by electrolysis
FR463487A
(en )
1914-02-24
Process for the production of ammonium sulfate
FR488819A
(en )
1918-11-19
Process for the electrolytic production of iron using an alkaline electrolyte
FR428019A
(en )
1911-08-21
Process for producing sulfur dioxide by decomposing plaster
FR19807E
(en )
1915-10-01
Process for the manufacture of white cement
FR19808E
(en )
1915-10-01
Process for the manufacture of white cement
FR468527A
(en )
1914-07-08
Process for the manufacture of white cement
FR489018A
(en )
1918-12-07
Iron production process by electrolysis
FR20794E
(en )
1919-06-14
Process for obtaining copper sulphate starting from copper sulphide
FR485667A
(en )
1918-01-29
Process for obtaining copper sulphate starting from copper sulphide
FR457846A
(en )
1913-09-26
Process for the production of artificial egrets
FR474499A
(en )
1915-02-23
Process for obtaining metal sulphates
FR467076A
(en )
1914-06-03
Process for the production of formaldehyde