Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6811722 | Glycerin triester plasticizer | Lei Zhou, George F. Schaefer, William W. Knickmeyer | 2004-11-02 |
| 6652774 | Glycerin triester plasticizer | Lei Zhou, George F. Schaefer, William W. Knickmeyer | 2003-11-25 |
| 6238772 | Mine brattice cloth | Bobby Picker, Michael J. Mittler | 2001-05-29 |