Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6235829 | Modification of chargeable pigment particles | — | 2001-05-22 |
| 6210472 | Transparent coating for laser marking | Yoshikazu Mizobuchi | 2001-04-03 |
| 6179907 | Black iron oxide with improved heat stability and method of preparing same | Lily W. Tai | 2001-01-30 |
| 6024789 | Method of preparing iron-containing pigment with enhanced dispersibility in both polar and nonpolar solvents | Yoshikazu Mizobuchi | 2000-02-15 |
| 5922121 | Hydrophobic treatment of pigments | — | 1999-07-13 |
| 5865885 | Hydrophilic treatment of pigments | — | 1999-02-02 |
| 5855661 | Pigment dispersion | — | 1999-01-05 |
| 5849074 | Method for preparing magnetic ink and dry pigment particles used therefor | — | 1998-12-15 |