|
GB413828A
|
|
Process for the absorption and recovery of oxides of nitrogen
|
|
GB409771A
|
|
Process of and apparatus for eliminating arsenic from concentrated sulphuric acid
|
|
GB387569A
|
|
Process for regenerating waste sulphuric acid
|
|
US1939890A
|
|
Structural material, capable of withstanding halogen hydracids
|
|
GB374354A
|
|
Structural material, capable of withstanding halogen hydracids
|
|
GB390125A
|
|
Process for the recovery of sulphuric acid
|
|
GB368598A
|
|
Improvements in or relating to the production of formates
|
|
GB373143A
|
|
Improvements in or relating to pans
|
|
GB361509A
|
|
Process for the recovery of sulphuric acid
|
|
GB363436A
|
|
Improvements in or relating to the manufacture of nitric acid from ammonia
|
|
US1910101A
|
|
Apparatus for the treatment of acids and acid materials
|
|
GB344801A
|
|
Furnaces for the production of sulphates and hydrochloric acid
|
|
GB339032A
|
|
Vessel and other apparatus for storing or treating nitric acid
|
|
GB281695A
|
|
Improvements in apparatus for making solutions
|
|
GB281691A
|
|
Improvements relating to the concentration of nitric acid
|
|
US1711638A
|
|
Apparatus for treating solutions
|
|
US1834693A
|
|
Means of promoting chemical reactions
|
|
GB271881A
|
|
Improvements in or relating to methods of producing volatile inorganic acids
|
|
US1754156A
|
|
Production of acids
|
|
US1733152A
|
|
Method of producing pure acids
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