| 5573658 |
Low brightness functional pigment from process by-product |
Robert E. Hardy, Bobby R. Skipper |
1996-11-12 |
| 5385239 |
Low brightness functional pigment from process by-product |
Robert E. Hardy, Bobby R. Skipper |
1995-01-31 |
| 5190615 |
Low brightness functional pigment from process by-product |
Robert E. Hardy, Bobby R. Skipper |
1993-03-02 |
| 5154767 |
Low brightness functional pigment from process by-product |
Robert E. Hardy, Bobby R. Skipper |
1992-10-13 |
| 5147458 |
Structured pigment from high TiO.sub.2 /Fe.sub.2 O.sub.3 kaolinite reject material |
Bobby R. Skipper, Robert E. Hardy |
1992-09-15 |
| 5106421 |
Mineral dye pigments |
Carl J. Marshall, Jr. |
1992-04-21 |
| 5037508 |
Aluminum chlorohydrate or hydrotalcite treated kaolin clays for pitch control |
Walter J. Hyder, Robert M. Weaver |
1991-08-06 |
| 4927465 |
Kaolin clays for pitch control |
Walter J. Hyder, Robert M. Weaver |
1990-05-22 |
| 4793985 |
Method of producing ultrafine ground calcium carbonate |
Charles R. Price, Frank R. Trowbridge |
1988-12-27 |
| 4680104 |
Apparatus for dewatering clay filter cake |
Edgar J. Maxwell, III |
1987-07-14 |