| 6399033 |
Process for increasing the yield in the manufacture of titanium dioxide by the chloride process |
— |
2002-06-04 |
| 5942201 |
Process utilizing titanium dioxide as a catalyst for the hydrolysis of carbonyl sulfide |
— |
1999-08-24 |
| 5861099 |
Process for the filtration of suspensions containing sulfur |
— |
1999-01-19 |
| 5683669 |
Metal chloride generator and improved process for the production of metal chlorides used in the manufacture of titanium dioxide by the chloride process |
Herman Trub |
1997-11-04 |
| 5540907 |
Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent |
Siegfried Blumel, Hans Thumm, Hans-Hermann Luginsland, Franz Rosendahl |
1996-07-30 |
| 5536487 |
Process for the use of rutile promoter and control additives in the manufacture of titanium dioxide by the chloride process |
— |
1996-07-16 |
| 5409679 |
Process for the production of titanium dioxide |
— |
1995-04-25 |
| 5407650 |
Process for purifying a technical iron chloride solution by selective precipitation |
Ulrich Rothe, Dieter Schinkitz |
1995-04-18 |
| 5393510 |
High solids content titanium dioxide suspension |
Siegfried Blumel, Hans Thumm, Hans-Hermann Luginsland, Franz Rosendahl |
1995-02-28 |
| 5248497 |
Production of purified iron chloride by a vacuum process in the manufacture of titanium dioxide |
Erwin Schmeir |
1993-09-28 |
| 5196181 |
Process for the production of titanium dioxide |
— |
1993-03-23 |
| 5073355 |
Process for the removal of chlorine from off-gases |
— |
1991-12-17 |
| 4784841 |
Process for the production of coarse, scrubbing aggregates of titanium dioxide particles by oxidation of titanium tetrachloride in the vapor phase and use of said aggregates for the prevention of deposit formation in the same production process |
Hans Thumm |
1988-11-15 |
| 4633935 |
Method for the cooling of hot gaseous solids suspensions of titanium dioxide |
Dietrich W. Schonherr |
1987-01-06 |
| 4569387 |
Device for the cooling of hot gaseous solids suspensions |
Dietrich W. Schonherr |
1986-02-11 |
| 4533530 |
Process for the separation of volatile chlorine compounds from the exhaust gases resulting from the chlorination of titanium-containing raw materials |
— |
1985-08-06 |
| 4521384 |
Process for the production of nearly aluminium chloride-free titanium tetrachloride from titaniferous raw materials containing aluminum compounds |
Hans Thumm |
1985-06-04 |
| 4394270 |
Apparatus for the chemical conditioning of sludges |
Dieter Schinkitz |
1983-07-19 |
| 4229399 |
Process for pelletizing and neutralizing solid mixtures of metal chlorides |
Donald G. Cole, Achim Kulling, Hermann B. Trub |
1980-10-21 |
| 4207201 |
Process for the manufacture of an aqueous iron (III)-chloride-sulfate solution |
Achim Kulling, Dieter Schinkitz, Edgar Klein |
1980-06-10 |