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1919-09-16 |
1920-02-24 |
Buttner Joseph |
Safety steering device for motor-vehicles
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1930-01-31 |
1933-11-21 |
Nat Synthetic Corp |
Process of oxidizing naphthalene and related condensed aromatic ring compounds
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1930-01-31 |
1933-03-21 |
Nat Synthetic Corp |
Process of oxidizing cyclic organic compounds
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1949-09-23 |
1951-10-23 |
Monsanto Chemicals |
Preparation of terephthalic acid
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1949-09-23 |
1951-10-23 |
Monsanto Chemicals |
Preparation of terephthalic acid
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1957-08-15 |
1962-11-13 |
Standard Oil Co |
Multistage oxidation system for preparing dicarboxylic acid
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1958-05-05 |
1963-03-19 |
Standard Oil Co |
Recovery of phthalic acid products
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1958-09-09 |
1963-01-01 |
Whiting Corp |
Hydraulic classifier
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1958-12-11 |
1962-04-10 |
Standard Oil Co |
Process for separation of phthalic acids
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1961-07-24 |
1965-10-13 |
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Process for the catalytic oxidation of xylenes or industrial mixtures of xylenes
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1961-08-14 |
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1962-04-17 |
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Badger Co |
Recovery of phthalic and maleic acid from solutions
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1962-10-06 |
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1963-02-27 |
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Standard Oil Co |
Separation process for isophthalic acid and terephthalic acid
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1963-05-20 |
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Verfahren zur herstellung von isophtalsaeure und/oder terephthalsaeure
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1963-10-10 |
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Purification of terephthalic acid
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1963-12-02 |
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Process for the separation of monobasic and dibasic aromatic acids
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1965-02-10 |
1968-06-11 |
Ethyl Corp |
Process for the production of dicarboxylic acids
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1965-05-17 |
1966-11-18 |
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1965-11-15 |
1969-02-12 |
Ici Ltd |
Crystallisation process
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1966-07-18 |
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Continuous crystallization in a plurality of cooling stages using dilutions by cooled solvent of feed to each stage
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1966-09-01 |
1970-12-22 |
Mobil Oil Corp |
Method for downflow leaching
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1966-11-04 |
1970-10-13 |
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Hydrocarbon oxidation
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1967-08-30 |
1971-06-08 |
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Fiber-grade terephthalic acid by catalytic hydrogen treatment of dissolved impure terephthalic acid
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1968-04-05 |
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Fines dissolver for crystallizers
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1968-04-16 |
1974-11-26 |
Celanese Corp |
Liquid phase oxidation of p-xylene to terephthalic acid
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1968-05-09 |
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Atlantic Richfield Co |
Method for the production of high-purity isophthalic or terephthalic acid
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1968-07-25 |
1970-06-25 |
Oemv Ag |
Bitumenblasverfahren und Einrichtung zur Durchführung desselben
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1968-08-29 |
1971-11-11 |
Dynamit Nobel Ag |
Verfahren zur Durchfuehrung exothermer chemischer Reaktionen in heterogenen Gas-Fluessigkeits-Gemischen
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1968-10-25 |
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1968-10-30 |
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Teijin Ltd |
Method for the preparation of terephthalic acid
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1968-11-04 |
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Process for the continuous purification of crude terephthalic acid
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1969-02-28 |
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1969-09-29 |
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Gas liquid inlet distributor
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Autocirculation apparatus
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Catalyst containing cobalt boron and oxygen and optionally aluminum of preparation and process
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2002-12-09 |
2004-06-24 |
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2003-01-02 |
2004-07-08 |
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2003-06-05 |
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2003-11-14 |
2009-02-03 |
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2004-09-02 |
2010-06-22 |
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2004-09-02 |
2009-11-10 |
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2009-03-17 |
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