FR620120A
(en )
1927-04-15
Process for the production of washing and emulsifying agents
FR735543A
(en )
1932-11-10
Process for the treatment of substances containing zinc sulphide
FR560077A
(en )
1923-09-28
Process for the treatment of zinc dust and other similar materials to obtain liquid zinc
FR703671A
(en )
1931-05-04
Process for the manufacture of glasses containing titanium anhydride
FR788692A
(en )
1935-10-14
Process for obtaining transformation products of substances containing carbon and their application to the treatment of water and salt solutions
FR934668A
(en )
1948-05-28
Process for the application and penetration of treatment liquids in the indefinable corrugations
FR688617A
(en )
1930-08-27
Process to prevent the agglomeration of saline substances
FR720198A
(en )
1932-02-16
Process for the purification or cleaning of acetylene
FR641926A
(en )
1928-08-13
Process and product for the purification of petroleum gasoline
FR47433E
(en )
1937-05-05
Process for obtaining transformation products of substances containing carbon and their application to the treatment of water and salt solutions
FR39628E
(en )
1932-01-22
Process for the activation of proteases
FR620482A
(en )
1927-04-23
Process for the treatment of slag containing zinc, iron and silicic acid in order to obtain zinc
FR572524A
(en )
1924-06-07
Process for the enrichment of colithic ores
BE385213A
(en )
1932-01-30
Process for improving the treatment of skin
FR722208A
(en )
1932-03-14
Process for the treatment of materials containing zinc oxide
FR837257A
(en )
1939-02-07
Process to improve the adhesion of bitumen
FR551784A
(en )
1923-04-13
Process for the treatment of silver-gold antimony ores
FR532826A
(en )
1922-02-13
Process for the purification and decoloration of synthetic acetic acid
FR47578E
(en )
1937-06-04
Process for obtaining transformation products of substances containing carbon and their application to the treatment of water and saline solutions
FR562334A
(en )
1923-11-08
Process for the production of ozone
FR558650A
(en )
1923-08-30
Process for the production of liquids that produce scum
FR666586A
(en )
1929-10-03
Process for the production and application of carbon black
FR761524A
(en )
1934-03-21
Process for the treatment of materials containing vanadium
FR26388E
(en )
1923-11-13
Method and apparatus for evaporation of solutions
FR715785A
(en )
1931-12-09
Process for the decoloration of molasses by electrolytic treatment and for obtaining yeast