Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4629421 | Gas and solid particulate material heat exchanger | Alan J. Kreisberg | 1986-12-16 | $1,989,000 |
| 4381916 | Method and apparatus for roasting fine grained ores | — | 1983-05-03 | $1,054,000 |
| 4260369 | Method of converting a rotary kiln cement making plant to a calcining furnace cement making plant | — | 1981-04-07 | $612,000 |