Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4293429 | MgO Dispensions | William J. Cheng, David B. Guthrie | 1981-10-06 |
| 4263151 | Oil solutions and/or dispersions of hydrated chromium oxides | William J. Cheng | 1981-04-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4293429 | MgO Dispensions | William J. Cheng, David B. Guthrie | 1981-10-06 |
| 4263151 | Oil solutions and/or dispersions of hydrated chromium oxides | William J. Cheng | 1981-04-21 |