Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4452670 | Method and apparatus for recovering preheater coal fines | Joseph E. Kovacic, Bernard R. Kuchta | 1984-06-05 | $4,080,000 |
| 4264414 | Method for reducing coke oven carbonization pressure | — | 1981-04-28 | $6,442,000 |
| 4225391 | Method of preparing coals for coking | Alex Peterson, Jr. | 1980-09-30 | $6,888,000 |