|
US1899507A
|
|
Manufacture of silver salt
|
|
US1926540A
|
|
Catalytic oxidation of crude anthracene
|
|
US1966068A
|
|
Manufacture of phthalimide
|
|
US1968253A
|
|
Manufacture of phthalimide
|
|
US1889961A
|
|
Purification of phthalide
|
|
US1885834A
|
|
Production of monocarboxylic acids and their derivatives
|
|
US1851383A
|
|
Purifying phthalic anhydride
|
|
US1917716A
|
|
Catalytic converters
|
|
US1896320A
|
|
Production of catalysts
|
|
US1850797A
|
|
Catalytic process and apparatus
|
|
US1842390A
|
|
Anthraquinone product
|
|
US1812341A
|
|
Catalytic apparatus
|
|
US1914723A
|
|
Purification of imides
|
|
US1935053A
|
|
Catalytic apparatus
|
|
US1905719A
|
|
Catalytic apparatus
|
|
US1879686A
|
|
Purification process using solvents
|
|
US1852782A
|
|
Purification of sublimable organic materials
|
|
US1880322A
|
|
Production of non-acidic carbonyl compounds
|
|
US1834679A
|
|
Process of controlling temperatures of vapor phase catalytic reactions
|
|
US1941688A
|
|
Catalytic oxidation of organic compounds
|
