CH280487A
(en )
1952-01-31
Process for purifying water.
CH260311A
(en )
1949-03-15
Process for making soap.
CH275158A
(en )
1951-05-15
Process for the production of solid calcium chloride.
CH278287A
(en )
1951-10-15
Process for the continuous production of alkyl-n-propyl-ketones by hydrogenation of 2-alkyl-furans.
CH274839A
(en )
1951-04-30
Process for the recovery of platinum.
CH247449A
(en )
1947-03-15
Process for clarifying tannery waste water.
CH258014A
(en )
1948-11-15
Process for making artificial films.
CH254455A
(en )
1948-04-30
Process for clarifying tannery waste water.
CH275797A
(en )
1951-06-15
Process for the production of nitropolystyrene.
AT167428B
(en )
1951-01-10
Process for the preparation of pentaenes
CH249877A
(en )
1947-07-31
Process and device for the purification of waste water.
CH279636A
(en )
1951-12-15
Process for making soap.
CH255632A
(en )
1948-06-30
Process for the treatment of water.
CH255633A
(en )
1948-06-30
Process for the deacidification of water.
CH278793A
(en )
1951-10-31
Method for the transmission of signals.
CH272839A
(en )
1951-01-15
Process for purifying drinking water.
CH263994A
(en )
1949-09-30
Process for producing contrasting photographic materials.
CH264319A
(en )
1949-10-15
Process for making photographic images.
CH282741A
(en )
1952-05-15
Process for the decarbonisation of water.
CH246265A
(en )
1946-12-31
Process for complete biological wastewater treatment.
CH270839A
(en )
1950-09-30
Process for making soap bars or bars of soap.
FR937614A
(en )
1948-08-23
Tanning process
AT175215B
(en )
1953-06-25
Process for the desalination of liquids, especially water
AT170282B
(en )
1952-02-11
Process for treating oils
CH306066A
(en )
1955-03-31
Process for stabilizing polyvinyl acetals.