Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4619911 | Sorbant and process using rice hull ash compositions | John D. Goodwin | 1986-10-28 |
| 4571389 | Rice hull ash compositions | John D. Goodwin | 1986-02-18 |
| 4488908 | Process for preparing a lightweight expanded silicate aggregate from rice hull ash | John D. Goodwin | 1984-12-18 |