Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5382475 | Pigmented algae-resistant granular materials and composites sheets including same | — | 1995-01-17 |
| 5356664 | Method of inhibiting algae growth on asphalt shingles | Sankar B. Narayan, William T. Fay, Billy L. George, Christine A. Sobon | 1994-10-18 |