Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5868256 | Rotary clay material refiner | — | 1999-02-09 | $3,288,000 |
| 5495989 | Apparatus for milling clay without substantial generation of powder | — | 1996-03-05 | $2,309,000 |
| 5379948 | Method for milling clay without substantial generation of powder | — | 1995-01-10 | $3,673,000 |
| 4931231 | Method for manufacturing discrete pellets of asphaltic material | — | 1990-06-05 | $707,000 |
| 4820742 | Method for continuous manufacture of solid water absorbing resin | William Alexander | 1989-04-11 | $588,000 |