STEAG GmbH
🏢 View company profile →45Patents
1Active
45Granted
39Portfolio score
Filing activity: Sep 16, 1974 → Aug 16, 2012
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4475472A | Method and apparatus for operating a vortex bed furnace | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US4474120A | Method for at least the two-stage ignition of a fuel dust power burner and a burner system for carrying out this method | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US6145582A | Heat accumulator block for regenerated heat exchanger | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4136998A | Process for the disposal of the residue of the exhaust gas washers of furnaces in particular bituminous coal power stations | Performing Operations; Transporting | 14 | Expired |
| US4036606A | Method of cleaning gases and apparatus therefor | Performing Operations; Transporting | 14 | Expired |
| US4367686A | Method for operating a coal dust furnace and a furnace for carrying out the method | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4789531A | Method of removing nitrogen oxides (NO.sub.x) from gases, especially flue gases | Performing Operations; Transporting | 13 | Expired |
| US5517930A | Method for operating a coal-fired power plant | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5811066A | Method and device for scrubbing flue gases | Performing Operations; Transporting | 12 | Expired |
| US4425757A | Installation for recovering energy from solid fossil fuels, more particularly bituminous coal high in inerts | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4735785A | Method of removing oxides of nitrogen from flue gas | Performing Operations; Transporting | 11 | Expired |
| US5356462A | Adsorption medium reactor, espectially fluidized bed reactor | Performing Operations; Transporting | 11 | Expired |
| US4028883A | Generating plant and method of starting up a generating plant | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5405812A | Method and arrangement for purifying a carbon-containing adsorption medium | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6299695A | Method and apparatus for processing ceramic components | Performing Operations; Transporting | 9 | Expired |
| US4548517A | Device for measuring the temperature in a dust carrying gas stream | Physics | 8 | Expired |
| US4064212A | Method of making pellets usable as aggregate or filler | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4255926A | Installation for recovering energy from solid fossil fuels, more particularly bituminous coal high in inerts | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6090355A | Method and device for cleaning flue gases from furnaces | Chemistry; Metallurgy | 7 | Expired |
| US4323037A | Fluidized bed firing unit | Performing Operations; Transporting | 6 | Expired |
| US5344616A | Apparatus for the separation of undesirable constituents from a waste gas | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4134774A | Aggregate for concrete and concrete composition containing same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4141380A | Flow-limiting device for a pipe carrying a fluid or gaseous medium | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4648331A | Process for the reduction of NO.sub.x in fluidized-bed furnaces | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4408723A | Method of and apparatus for the treatment of pyrite-containing mineral coal | Performing Operations; Transporting | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.