Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6159886 | Clay composition containing a tannin and a method for producing bricks therefrom | Marshall D. Bishop, Orval G. Ward, Earnest W. McNickle | 2000-12-12 |
| 5041599 | Catalytic synthesis of thionocarbamates from xanthates and amines | Marshall D. Bishop | 1991-08-20 |