Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6767620 | Pigmented porous material | John S. Zambounis, Patrick Verhoustraeten, Zhimin Hao, Patrice Bujard | 2004-07-27 |
| 6180315 | Compositions for making structured color images and application thereof | Ulrich Schadeli, John S. Zambounis, Abul Iqbal, Zhimin Hao | 2001-01-30 |
| 6040108 | Compositions for making structured color images and application thereof | Ulrich Schadeli, John S. Zambounis, Abul Iqbal, Zhimin Hao | 2000-03-21 |
| 5274170 | Substituted benzophenone stabilizers | David G. Leppard, David H. Steinberg | 1993-12-28 |
| 5145766 | Process for stabilizing magenta couplers and the corresponding image dyes in photographic materials | David G. Leppard, David H. Steinberg | 1992-09-08 |
| 4959167 | Asymmetric disulfides in lubricant compositions | — | 1990-09-25 |
| 4822506 | Lubricant additives containing sulfur | — | 1989-04-18 |
| 4482463 | Lubricant compositions containing nitrogen-containing polysulfide load-carrying additives | Rudolf Kirchmayr | 1984-11-13 |