FR1125849A
(en )
1956-11-08
Method and apparatus for the manufacture of phosphoric acid
FR10065E
(en )
1909-04-23
Manufacture of hydrofluosilicic acid and fluosilicates, mainly by use of fluated residues from superphosphate factories
FR1074785A
(en )
1954-10-08
Process for the preparation of pure calcium fluoride and silicic acid from fluorspar containing silicon dioxide
FR8269E
(en )
1908-02-20
Manufacture of hydrofluosilicic acid and fluosilicates, mainly through the use of fluate residues from superphosphate factories
FR474380A
(en )
1915-02-18
Improvements in the manufacture of phosphoric acid and phosphates
FR414521A
(en )
1910-09-05
Technically and chemically pure phosphoric acid manufacturing process
FR511284A
(en )
1920-12-21
Acid ammonium phosphate manufacturing process
FR418179A
(en )
1910-12-02
Manufacturing process of chlorosulfonic acid
FR971757A
(en )
1951-01-22
Process for the manufacture of a compound fertilizer from an acidic solution, containing fluorine as well as calcium and phosphoric acid
FR478707A
(en )
1916-01-05
Improvements in the manufacture of phosphate compounds for fertilizers and fertilizers
FR514966A
(en )
1921-03-22
Process for the manufacture of saccharic acid and tartaric acid by oxidation of carbohydrates
FR1409248A
(en )
1965-08-27
Process for the purification of residual gypsum from the manufacture of phosphoric acid by sulfuric attack of natural phosphates
FR690818A
(en )
1930-09-26
Manufacture of phosphoric acid or certain phosphates from lead phosphate
FR621216A
(en )
1927-05-07
Process for the manufacture of a mixed fertilizer containing phosphoric acid and nitrogen
FR417416A
(en )
1910-11-14
Process for the manufacture of fertilizers based on carbonophosphates and potassium and calcopotassium phosphates
FR1181150A
(en )
1959-06-11
Improvement in the manufacture of phosphoric acid
FR663660A
(en )
1929-08-23
Process for the manufacture of triple superphosphates and mixed superphosphates independently of the manufacture of phosphoric acid
ES58030A1
(en )
1914-06-01
Improvements in the manufacture of phosphoric acid or phosphates.
FR541329A
(en )
1922-07-26
Process for the preparation and manufacture of superphosphates and fertilizers
FR1129978A
(en )
1957-01-29
Process for the manufacture of phosphoric acid and alkaline phosphates
FR424598A
(en )
1911-05-17
Process for preparing concentrated nitrogenous acid from nitrogen peroxide
FR400305A
(en )
1909-07-24
Manufacturing process of nitric acid
FR500507A
(en )
1920-03-16
Nitric Acid Concentration Process
FR510942A
(en )
1920-12-14
Process for the preparation of highly concentrated nitrogen acid
FR429626A
(en )
1911-09-27
Fertilizer formed by the decomposition of fir twigs and method of manufacture