CH50730A
(en )
1911-07-01
Electro-metallurgical process for the direct extraction of iron, industrially pure from its ores
FR10737E
(en )
1909-09-10
Process for the direct extraction of iron from ore
FR399901A
(en )
1909-07-10
Process for the direct extraction of iron from ore
FR412724A
(en )
1910-07-21
Process for the extraction of copper from low grade ores
FR413170A
(en )
1910-08-02
Process for ore reduction
FR414660A
(en )
1910-09-08
Mechanical-chemical process for the separation of ores
FR12480E
(en )
1910-09-23
Advanced process for the separation of complex ores
FR463598A
(en )
1914-02-26
Electrolytic process for the extraction of copper from ores
FR436472A
(en )
1912-03-28
Process for the catalytic production of ammonia from its elements using pure iron as a catalytic agent
FR474132A
(en )
1915-02-09
Process for smelting iron ores
FR343114A
(en )
1904-09-26
Process for the direct extraction of zinc from its ores
FR370803A
(en )
1907-02-20
Process for the electrolytic extraction of zinc from its ores
FR463221A
(en )
1914-02-17
Process for the separation of meta-cresol from para-cresol
FR475770A
(en )
1915-06-14
Advanced process for the electrolysis of iron
FR458149A
(en )
1913-10-03
Process for the extraction of metallic zinc from its ores
FR461623A
(en )
1914-01-07
Process for the production of hydrogen from iron and water vapor
FR413747A
(en )
1910-08-17
Process for refining salt and recovering its impurities as by-products
FR481394A
(en )
1916-11-28
Process for the direct production of refined iron and refined steel from titanium-bearing iron ores
CH58030A
(en )
1913-02-17
Process for obtaining pure iron from cast iron
FR428521A
(en )
1911-09-01
Process and devices for the extraction of metals from their ores
FR430167A
(en )
1911-10-10
Electrolytic process for separating zinc from zinc sulfate solution
FR440712A
(en )
1912-07-19
Process for the extraction of copper from sulphide ores, and other materials
FR353029A
(en )
1905-08-31
Process for the separation of copper, especially its poor ores
FR437685A
(en )
1912-04-27
Process for the production of oxygen
CA125013A
(en )
1910-04-12
Process of recovering metals from ores