Norbert Ullrich
15Patents
6h-index
40Co-inventors
66Inventor score
Filing activity: Mar 26, 1984 → Jun 12, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6878836B2 | Process for the epoxidation of propene | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4818253A | Device for gasifying finely divided fuels under increased pressure | Chemistry; Metallurgy | 12 | Expired |
| US4731097A | Gas cooling device for a gasifer | Chemistry; Metallurgy | 11 | Expired |
| US7169945B2 | Process for the epoxidation of olefins | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4617988A | Soot blower for the removal of deposits from surfaces of heat exchangers or the like | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US10214504B2 | Process and reactor for the epoxidation of propene | Performing Operations; Transporting | 6 | Active |
| US7141683B2 | Process for the epoxidation of olefins | Chemistry; Metallurgy | 5 | Expired |
| US10399952B2 | Process for the epoxidation of propene | Chemistry; Metallurgy | 3 | Active |
| US4574713A | Pin for holding and/or cooling of ceramic coatings in hot reaction chambers, and method of manufacturing the same | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US9422492B2 | Process for the conversion of a feed containing biomass for the production of hydrocarbons, by Fischer-Tropsch synthesis | Emerging Cross-Sectional Technologies | 2 | Active |
| US9234148B2 | Process and apparatus for the utilization of the enthalpy of a syngas by additional and post-gasification of renewable fuels | Emerging Cross-Sectional Technologies | 1 | Active |
| US10118824B2 | Process for purifying synthesis gas by washing with aqueous solutions of amines | Chemistry; Metallurgy | 1 | Active |
| US11473025B2 | Method for processing biomass by co-grinding with a second biomass feedstock | Emerging Cross-Sectional Technologies | 0 | Active |
| US4590867A | Pin for holding and/or cooling of ceramic coatings in hot reaction chambers | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US11248185B2 | Method for processing biomass by co-grinding with a fossil-based feedstock | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.