FR662569A
(en )
1929-08-08
Process for the production of hydrocyanic acid
FR686137A
(en )
1930-07-22
Manufacturing process of concentrated nitrogen acid
FR692542A
(en )
1930-11-06
Process for the production of hydrocyanic acid
FR644314A
(en )
1928-10-05
Manufacturing process of pure lactic acid
BE346214A
(en )
1927-12-31
Manufacturing process of pure lactic acid
FR643704A
(en )
1928-09-21
Manufacturing process of coated cathodes
FR747516A
(en )
1933-06-16
Sulfuric acid manufacturing process
FR630951A
(en )
1927-12-12
Manufacturing process of active silicic acid
FR680322A
(en )
1930-04-28
Process for making chemically pure phosphoric acid
FR626351A
(en )
1927-09-05
Sulfuric acid manufacturing process
FR687941A
(en )
1930-08-14
Production process of phosphoric acid and applications of this process
FR611857A
(en )
1926-10-13
Pure hydrochloric acid manufacturing process
FR30237E
(en )
1926-03-30
Process for the manufacture of a chemically pure hydrochloric acid
FR608743A
(en )
1926-08-02
Manufacturing process of anhydrous phosphoric acid
FR600279A
(en )
1926-02-03
Acetylsalicylic acid manufacturing process
FR620363A
(en )
1927-04-21
Butyric acid manufacturing process
FR604956A
(en )
1926-05-17
Process for the manufacture of phosphoric acid
FR599080A
(en )
1926-01-04
Manufacturing process of hydrofluoric acid
FR580459A
(en )
1924-11-07
Manufacturing process of titanic acid
FR627671A
(en )
1927-10-10
Intensive production process of sulfuric acid
FR730711A
(en )
1932-08-20
Manufacturing process of oxalic acid
FR635626A
(en )
1928-03-20
Manufacturing process of ammonium chloride
BE383321A
(en )
1931-11-30
Manufacturing process of citric acid
FR609100A
(en )
1926-08-07
Production process for phosphoric acid
FR615478A
(en )
1927-01-08
Process for the production of concentrated acetic acid