FR653784A
(en )
1929-03-27
Process for removing silica from solution in liquids, in particular in use water
FR690342A
(en )
1930-09-18
Process for removing unwanted elements such as air, water, etc., contained in solid or liquid hydrocarbons
FR686373A
(en )
1930-07-25
Machines for clarifying and purifying liquids
FR650720A
(en )
1929-01-12
Improvements in apparatus for softening or purifying water or for applying processes based on exchange reactions
FR668821A
(en )
1929-11-07
Process for the purification and use of aqueous liquids, in particular waste water
FR38413E
(en )
1931-06-03
Process for the purification and use of aqueous liquids, in particular waste water
FR665964A
(en )
1929-09-25
Process for water purification
FR653159A
(en )
1929-03-18
Process for obtaining 1-aminoanthraquinone-2-sulfonic acid
FR748584A
(en )
1933-07-06
Method and apparatus for purifying and regenerating siliceous materials
FR633319A
(en )
1928-01-27
Process for obtaining diazotypes
FR658889A
(en )
1929-06-21
Advanced process for the purification of liquid hydrocarbons
FR653771A
(en )
1929-03-27
Process for the purification of polluted liquids
FR700345A
(en )
1931-02-27
Process for removing turbidity from acetocellulose
FR664557A
(en )
1929-09-05
Apparatus for modifying the saline composition of drinking water, for purifying and regenerating it
FR692364A
(en )
1930-11-05
Process for removing silicic acid from liquids with recovery of removal agents
FR659196A
(en )
1929-06-25
Process for cleaning liquids by centrifugation
FR631530A
(en )
1927-12-22
Agent for water purification
FR659794A
(en )
1929-07-04
Improvements to devices for softening or purifying water
FR652382A
(en )
1929-03-07
Process for carrying out photo-chemical reactions
FR730697A
(en )
1932-08-19
Process for the sterilization of liquids, in particular drinking water, by means of oligodynamics
FR646655A
(en )
1928-11-14
Device for the purification of waste water from distilleries
FR647457A
(en )
1928-11-24
Process for obtaining activated carbon
FR692012A
(en )
1930-10-29
Process for the regeneration of celluloid waste
FR642650A
(en )
1928-08-31
Process to prevent the formation of scale formation in boilers
FR665178A
(en )
1929-09-16
Water sterilization process