Lurgi GmbH
61Patents
38Active
61Granted
47Portfolio score
Filing activity: Aug 15, 1979 → May 7, 2012 · 26 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7067558B2 | Process for the production of carbon monoxide and methanol | Chemistry; Metallurgy | 19 | Expired |
| US7521483B2 | Coproduction of methanol and ammonia from natural gas | Emerging Cross-Sectional Technologies | 13 | Expired |
| US8193383B2 | Process for continuously preparing fatty acid methyl esters or fatty esters | Emerging Cross-Sectional Technologies | 8 | Active |
| US4347156A | System and process for reactivating carbon | Chemistry; Metallurgy | 8 | Expired |
| US8388864B2 | Process and plant for producing synthesis gas | Chemistry; Metallurgy | 7 | Active |
| US8444940B2 | Reactor for producing C2- to C8- olefins from a material flow containing oxygenate, water vapor and one or more hydrocarbons | Emerging Cross-Sectional Technologies | 6 | Active |
| US7470415B2 | Method for producing ammonia on the basis of a nitrogen-hydrogen mixture from natural gas | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7923591B2 | Method and device for producing lower olefins from oxygenates | Emerging Cross-Sectional Technologies | 4 | Active |
| US6737546B2 | Extraction process for recovery of acrylic acid | Chemistry; Metallurgy | 4 | Expired |
| US9481573B2 | Steam reformer based hydrogen plant scheme for enhanced carbon dioxide recovery | Emerging Cross-Sectional Technologies | 3 | Active |
| US7674932B2 | Method for the production of urea from natural gas | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8629190B2 | Process and plant for producing methanol | Performing Operations; Transporting | 3 | Active |
| US7183326B2 | Installation and method for producing and disaggregating synthesis gases from natural gas | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7977479B2 | Method for producing melamine with heat recovery | Emerging Cross-Sectional Technologies | 3 | Active |
| US8629191B2 | Process and plant for producing methanol | Performing Operations; Transporting | 2 | Active |
| US8426665B2 | Process and plant for producing hydrocarbons | Emerging Cross-Sectional Technologies | 2 | Active |
| US7157070B2 | Method for purifying gas containing hydrocarbons | Performing Operations; Transporting | 2 | Expired |
| US6884324B2 | Column for concentrating phthalic anhydride | Chemistry; Metallurgy | 2 | Expired |
| US7131489B2 | Heat exchanger | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US8288574B2 | Method for producing fatty acid methyl esters or fatty acid ethyl esters | Emerging Cross-Sectional Technologies | 2 | Active |
| US4442782A | Feed distributor for multiple hearth furnace | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US7269972B2 | Plant and method for fractionating and purifying synthesis gas | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8647396B2 | Process and plant for producing biodiesel | Emerging Cross-Sectional Technologies | 1 | Active |
| US8524970B2 | Process and plant for producing synthetic fuels | Emerging Cross-Sectional Technologies | 1 | Active |
| US8974584B2 | Gas scrubber having an integrated heat exchanger | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.