Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143065 | Precipitated calcium carbonate product having improved brightness and method of preparing the same | Gary M. Freeman, Klaus Akilles Lunden | 2000-11-07 |
| 5846309 | Coarse particle size kaolin clay and method | Gary M. Freeman, Kenneth B. Files | 1998-12-08 |
| 5534057 | Process for treating kaolin clays for pitch control and the treated clays | Gary M. Freeman, Carl J. Marshall, Jr., James Marvin, Albert F. Lareau | 1996-07-09 |
| 5180511 | Flotation aid and process for removal of impurities from silicate minerals | — | 1993-01-19 |
| 5167707 | High performance coarse particle size SAMS pigments for paint and plastics applications | Gary M. Freeman, Marion M. Jones, Thad T. Broome | 1992-12-01 |
| 5037534 | Flotation aid and process for removal of impurities from silicate minerals | — | 1991-08-06 |
| 4940534 | Froth flotation column | — | 1990-07-10 |