US2807521A
(en)
*
|
1953-11-09 |
1957-09-24 |
Chemical Construction Corp |
Phosphoric acid manufacture
|
BE538799A
(xx)
*
|
1955-06-07 |
1955-06-30 |
Union Chimique Belge Sa |
|
US2885264A
(en)
*
|
1955-06-10 |
1959-05-05 |
Chemical Construction Corp |
Hemihydrate process for phosphoric acid manufacture
|
US2885263A
(en)
*
|
1955-06-10 |
1959-05-05 |
Chemical Construction Corp |
Anhydrite process for phosphoric acid manufacture
|
US2963358A
(en)
*
|
1955-11-17 |
1960-12-06 |
Armour & Co |
Production of granular fertilizers
|
US2887362A
(en)
*
|
1955-12-30 |
1959-05-19 |
Phillips Petroleum Co |
Manufacture of phosphoric acid
|
US2890936A
(en)
*
|
1956-02-01 |
1959-06-16 |
Curt S Benefield |
Method for producing phosphoric acid
|
US3118731A
(en)
*
|
1959-10-28 |
1964-01-21 |
|
Svanoe |
DE1217410B
(de)
*
|
1960-10-05 |
1966-05-26 |
Asahi Chemical Ind |
Verfahren zur Herstellung von loesliche Phosphate und Nitrate enthaltenden Duengemitteln
|
GB970947A
(en)
*
|
1960-10-05 |
1964-09-23 |
Asahi Chemical Ind |
A method for producing chemical fertilizers
|
US3472619A
(en)
*
|
1964-03-06 |
1969-10-14 |
Singmaster & Breyer |
Production of phosphoric acid and calcium sulfate
|
US3467496A
(en)
*
|
1966-11-07 |
1969-09-16 |
American Cyanamid Co |
Process for preparing wet process phosphoric acid and calcium sulfate from phosphate rock
|
GB1209911A
(en)
*
|
1967-02-01 |
1970-10-21 |
Marchon Products Ltd |
Manufacture of phosphoric acid
|
US4134964A
(en)
*
|
1974-10-04 |
1979-01-16 |
Hoechst Aktiengesellschaft |
Process and apparatus for purifying wet-processed phosphoric acid
|
US4196172A
(en)
*
|
1976-07-07 |
1980-04-01 |
Occidental Petroleum Corporation |
Hemihydrate type phosphoric acid process
|
DE140028C
(xx)
*
|
1976-07-07 |
|
Occidental Petroleum Corp |
|
US4258008A
(en)
*
|
1978-01-05 |
1981-03-24 |
Occidental Research Corporation |
System for phosphoric acid production with decreased foaming
|
US4258007A
(en)
*
|
1978-01-05 |
1981-03-24 |
Occidental Research Corporation |
Feed system for phosphoric acid production with decreased foaming
|
US4277448A
(en)
*
|
1977-12-29 |
1981-07-07 |
Occidental Petroleum Corporation |
Phosphoric acid process with high circulation rates
|
LU84713A1
(fr)
*
|
1983-03-25 |
1984-11-14 |
Prayon Soc |
Procede et preparation d'acide phosphorique et de sulfate de calcium hemihydrate alpha
|
US6562308B1
(en)
*
|
2000-11-15 |
2003-05-13 |
Agrium, Inc. |
Process for the recovery of phosphate from phosphate rock
|
BE1016065A3
(fr)
|
2004-06-01 |
2006-02-07 |
Prayon Technologies |
Procede de production d'acide phosphorique.
|