Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5842357 | Landfill gas recovery | Lawrence A. Siwajek, William R. Brown | 1998-12-01 |
| 5681360 | Landfill gas recovery | Lawrence A. Siwajek, William R. Brown | 1997-10-28 |
| 5021232 | Sulfur recovery process | Ralph E. Hise | 1991-06-04 |
| 4623372 | Crystallization process | Robert Adler, William R. Brown, Lun Auyang, Yin-Chang Liu | 1986-11-18 |