Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6409422 | Plastic concrete form | Armin E. Mittermaier | 2002-06-25 |
| 4740294 | Method for sequentially co-processing heavy hydrocarbon and carbonaceous materials | — | 1988-04-26 |
| 4664788 | Multi-stage coal liquefaction and fractionation method | Srikant Gir | 1987-05-12 |
| 4629554 | Coal liquefaction with coal tar solvent | Srikant Gir | 1986-12-16 |
| 4415442 | Process for the separation of entrained organic fluids from gaseous streams in a coal deashing system | — | 1983-11-15 |
| 4248692 | Process for the discharge of ash concentrate from a coal deashing system | Alfred H. Knebel | 1981-02-03 |
| 4227994 | Operation of a coal deashing process | Alfred H. Knebel | 1980-10-14 |
| 4225420 | Process for improving soluble coal yield in a coal deashing process | — | 1980-09-30 |