Deutsche Carbone AG
16Patents
0Active
16Granted
31Portfolio score
Filing activity: Mar 2, 1987 → Jan 17, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5334314A | Composition membrane for separating water from fluids containing organic components by means of pervaporation | Performing Operations; Transporting | 27 | Expired |
| US5611930A | Cellulose ester blend membranes, process for making same and their use | Chemistry; Metallurgy | 19 | Expired |
| US5385647A | Process for the reduction of the alcohol content of alcoholic beverages | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5164424A | Polymer having a betaine structure, solution diffusion membrane, process for producing same and use thereof | Performing Operations; Transporting | 13 | Expired |
| US5270504A | Sliding contact member for high currrent densities | Electricity | 12 | Expired |
| US5590708A | Heat exchanger block | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4806224A | Electrolytic process | Chemistry; Metallurgy | 6 | Expired |
| US5700374A | Pervaporation membranes and use thereof | Performing Operations; Transporting | 5 | Expired |
| US5512179A | Membrane process for separation of fluid mixtures | Performing Operations; Transporting | 4 | Expired |
| US6268679A | Carbon brush for an electrical machine in a vehicle | Electricity | 3 | Expired |
| US5626803A | Process for economical manufacture of brushes of predetermined anisotropy | Electricity | 2 | Expired |
| US5558776A | Process for the manufacture of a composite plasma membrane and use thereof | Chemistry; Metallurgy | 1 | Expired |
| US6123252A | Process for fixing a graphite-rich material onto a metallic body | Performing Operations; Transporting | 1 | Expired |
| US6091178A | Carbon brush for electric fuel pumps | Electricity | 1 | Expired |
| US7449144B2 | Process for manufacturing a sliding contact piece for medium to high current densities | Emerging Cross-Sectional Technologies | 0 | Expired |
| US6278215A | Carbon brush with at least one pressed-in stranded copper wire | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.