Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6965240 | Apparatus and methods for analyzing particles using light-scattering sensors and ionization sensors | Charles D. Litton, William H. Schiffbauer | 2005-11-15 |
| 6401520 | Dust detector tube | Steven J. Page, Harry DoBroski, Jr. | 2002-06-11 |
| 5424195 | Method for in situ biological conversion of coal to methane | — | 1995-06-13 |
| 5273344 | Process for inerting a coal mining site | Michael T. McCullough | 1993-12-28 |
| 4530112 | Self-adjusting cap lamp bracket | Andrew B. Cecala | 1985-07-23 |