Sulzer Chemtech AG
179Patents
84Active
179Granted
51Portfolio score
Filing activity: Aug 28, 1992 → Apr 30, 2019 · 37 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6693213B1 | Method of producing ethyl acetate and an equipment for carrying out this method | Emerging Cross-Sectional Technologies | 195 | Expired |
| US5865537A | Mixing device for mixing a low-viscosity fluid into a high-viscosity fluid | Performing Operations; Transporting | 104 | Expired |
| US5944419A | Mixing device | Performing Operations; Transporting | 58 | Expired |
| US6161730A | Apparatus for carrying out a mixing dispensing of a plurality of flowable components | Performing Operations; Transporting | 54 | Expired |
| US5504247A | Method and apparatus for purifying acrylic acid, and acrylic acid purified by the method | Chemistry; Metallurgy | 43 | Expired |
| US5851067A | Static mixer with a bundle of chambered strings | Performing Operations; Transporting | 38 | Expired |
| US5437798A | Purification of salt-charged waste water by wet oxidation under super-critical conditions | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5602216A | Process and apparatus for performing a polymerisation in a tube reactor | Chemistry; Metallurgy | 37 | Expired |
| US6293526A | Liquid distributor for packing columns | Performing Operations; Transporting | 36 | Expired |
| US5913324A | Apparatus for injecting additives into a flow of a highly viscous liquid | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6866171B2 | Method for introducing additives | Performing Operations; Transporting | 35 | Expired |
| US5492408A | Static mixing apparatus | Performing Operations; Transporting | 29 | Expired |
| US6575437B2 | Counterflow column with a liquid distributor | Performing Operations; Transporting | 28 | Expired |
| US6769801B1 | Static mixer with precision cast elements | Performing Operations; Transporting | 28 | Expired |
| US5941637A | Flow forming member that reduces the disadvantageous effects of thermal degradation in the boundary layers | Performing Operations; Transporting | 27 | Expired |
| US5688047A | Static mixer with monolithic mixing elements providing an increased resistance force during mixing | Performing Operations; Transporting | 26 | Expired |
| US5520812A | Process for the biological purification of water | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5783119A | Liquid distributor for columns | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6598766B1 | Ventilation device for a piston for a cartridge | Performing Operations; Transporting | 25 | Expired |
| US6458992B1 | Process and apparatus for the production of butylacetate and isobutylacetate | Chemistry; Metallurgy | 24 | Expired |
| US8720870B2 | Contact tray for a mass transfer column | Performing Operations; Transporting | 24 | Active |
| US5564827A | Device for the homogenization of high-viscosity fluids | Performing Operations; Transporting | 24 | Expired |
| USD780286S1 | Fluid distribution equipment | General | 23 | Active |
| US6500048B1 | Method for separating profiled foils | Performing Operations; Transporting | 22 | Expired |
| US7712728B2 | Liquid distributor | Performing Operations; Transporting | 22 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.