FLSmidth Inc.
74Patents
3Active
74Granted
40Portfolio score
Filing activity: Dec 10, 1973 → Jul 13, 2010 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4445911A | Method of controlling operation of an electrostatic precipitator | Emerging Cross-Sectional Technologies | 60 | Expired |
| US4659342A | Method of controlling operation of an electrostatic precipitator | Emerging Cross-Sectional Technologies | 58 | Expired |
| US7028934B2 | Vertical roller mill with improved hydro-pneumatic loading system | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US4154088A | Apparatus for measuring the particulate matter content of a gas | Physics | 20 | Expired |
| US4030528A | Magazine for bags such as sacks | Performing Operations; Transporting | 19 | Expired |
| US4485974A | Vertical roller mill and method of use thereof | Performing Operations; Transporting | 18 | Expired |
| US4353687A | Rotary kiln | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4529579A | Method for producing anhydrous alumina | Chemistry; Metallurgy | 17 | Expired |
| US4025295A | Method of burning pulverous raw material and rotary kiln plant therefor | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4369926A | Method and apparatus for grinding granular materials | Performing Operations; Transporting | 16 | Expired |
| US4344596A | Adjustable roller support for a rotary drum | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4059396A | Cement manufacture | Chemistry; Metallurgy | 14 | Expired |
| US4613346A | Energy control for electrostatic precipitator | Performing Operations; Transporting | 13 | Expired |
| US4002420A | Method of burning calcined and uncalcined pulverous raw material and rotary kiln plant therefor | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4045162A | Method of burning granular or pulverulent raw material and kiln plant therefor | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US3938949A | Method and apparatus for burning pulverulent materials | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4022568A | Method and apparatus for heat treating pulverous raw materials | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4004876A | Method of burning pulverous raw material and rotary kiln plant therefor | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4171949A | Arrangement for supporting rotary drums | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4101337A | Cement manufacture | Chemistry; Metallurgy | 11 | Expired |
| US3955995A | Calcination of pulverous material | Chemistry; Metallurgy | 11 | Expired |
| US3997106A | Centrifuge rotor | Performing Operations; Transporting | 10 | Expired |
| US4503477A | Method and arrangement for protecting a thyristor switch of a pulse generator | Electricity | 10 | Expired |
| US3940241A | Rotary kiln plant | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US3964717A | Tube mill | Performing Operations; Transporting | 10 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.