Energy & Environmental Research Foundation
21Patents
1Active
21Granted
36Portfolio score
Filing activity: Apr 8, 1987 → Sep 7, 2005 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5670122A | Methods for removing air pollutants from combustion flue gas | Emerging Cross-Sectional Technologies | 144 | Expired |
| US4974530A | Apparatus and methods for incineration of toxic organic compounds | Mechanical Engineering; Lighting; Heating | 66 | Expired |
| US6007699A | Autothermal methods and systems for fuels conversion | Emerging Cross-Sectional Technologies | 63 | Expired |
| US5827496A | Methods and systems for heat transfer by unmixed combustion | Emerging Cross-Sectional Technologies | 61 | Expired |
| US5509362A | Method and apparatus for unmixed combustion as an alternative to fire | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5139755A | Advanced reburning for reduction of NO.sub.x emissions in combustion systems | Performing Operations; Transporting | 36 | Expired |
| US4851201A | Methods of removing NO.sub.x and SO.sub.x emissions from combustion systems using nitrogenous compounds | Emerging Cross-Sectional Technologies | 36 | Expired |
| US7615101B2 | High energy dissociation for mercury control systems | Performing Operations; Transporting | 35 | Active |
| US5967061A | Method and system for reducing nitrogen oxide and sulfur oxide emissions from carbonaceous fuel combustion flue gases | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US4861567A | Methods of reducing NO.sub.x and SO.sub.x emissions from combustion systems | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5756059A | Advanced reburning methods for high efficiency NO.sub.x control | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4849192A | Methods for preventing formation of sulfuric acid and related products in combustion effluents | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5656244A | System for reducing NO.sub.x from mobile source engine exhaust | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4743436A | Methods for preventing ammonium bisulfate formation during the noncatalytic reduction of nitric oxide | Performing Operations; Transporting | 22 | Expired |
| US5270025A | Methods for controlling N.sub.2 O emissions and for the reduction of NO.sub . .sub.x emissions in combustion systems while controlling N.sub.2 O emissions | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5339754A | Method and apparatus for prevention of puffing by rotary kiln and other incinerators and combustion systems | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5800793A | Process for reducing NO.sub.x from mobile source engine exhaust | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5116584A | Methods for enlarging the useful temperature window for NO.sub.x reduction in combustion systems | Performing Operations; Transporting | 15 | Expired |
| US5118481A | Methods for reducing NO.sub.x emissions from combustion effluents | Performing Operations; Transporting | 12 | Expired |
| US5225175A | Self-scrubbing removal of submicron particles from gaseous effluents | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5988081A | Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.