Issued Patents 1994
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, Margaret M. Nauman | 1994-11-29 |
| 5286544 | Oil and rubber treated roofing granules | — | 1994-02-15 |