Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368936 | Granular materials including a ceramic coating which reduces dusting, method of preparing same and method of reducing dust generation | Ehrich J. Braunschweig, Joseph Graham | 1994-11-29 |
| 5240760 | Polysiloxane treated roofing granules | Billy L. George, Stefan A. Babirad | 1993-08-31 |