Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658547 | Simplified efficient process for reducing NO.sub.x, SO.sub.x, and particulates | Joseph R. Comparato, John E. Hofmann | 1997-08-19 |
| 4903755 | Apparatus for preheating combustion air, accompanied by simultaneous reduction of NO.sub.x contained in the flue gases | Sigfrid Michelfelder | 1990-02-27 |
| 4739826 | Apparatus for preheating combustion air, accompanied by simultaneous reduction of NO.sub.x contained in the flue gases | Sigfrid Michelfelder | 1988-04-26 |
| 4732210 | Column-type regenerative gas-gas heat exchanger with heat-transferring elements | Bernd Hermanns | 1988-03-22 |
| 4681746 | Method of regulating the amount of reducing agent added during catalytic reduction of NO.sub.x contained in flue gases | Klaus Weber, Jurgen Meier | 1987-07-21 |
| 4602673 | Apparatus for preheating combustion air, accompanied by simultaneous reduction of NO.sub.x contained in the flue gases | Sigfrid Michelfelder | 1986-07-29 |
| 4598766 | Column-type regenerative gas-gas heat exchanger with heat-transferring elements | Bernd Hermann | 1986-07-08 |
| 4565679 | Method of regulating the amount of reducing agent added during catalytic reduction of NO.sub.x contained in flue gases | Klaus Weber, Jurgen Meier | 1986-01-21 |
| 4509584 | Heat-transferring elements for regenerative heat exchange in gas-gas fluidized bed heat exchangers | Bernd Hermanns | 1985-04-09 |
| 4408659 | Heat storage mass for regenerative heat exchange | Bernd Hermanns | 1983-10-11 |
| 4361182 | Heat-transferring elements for regenerative heat exchange | — | 1982-11-30 |
| 4310046 | Regenerative heat exchanger | — | 1982-01-12 |