Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6257048 | Method and apparatus for measuring surface changes, in porous materials, using multiple differently-configured acoustic sensors | Vincent M. Hietala, Chris P. Tigges | 2001-07-10 |
| 5028352 | Low density/low surface area silica-alumina composition | Douglas M. Smith | 1991-07-02 |