KSB Aktiengesellschaft
134Patents
61Active
134Granted
50Portfolio score
Filing activity: May 17, 1990 → Jun 27, 2016 · 14 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5117908A | Method and equipment for obtaining energy from oil wells | Fixed Constructions | 93 | Expired |
| US5984629A | Turbo-machine with reduced abrasive wear | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5207560A | Fluid flow machine with variable clearances between the casing and a fluid flow guiding insert in the casing | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5639100A | Metal gasket | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US5478200A | Centrifugal pump impeller | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US8421032B2 | Disinfecting device having a power supply and a fluid outlet | Emerging Cross-Sectional Technologies | 14 | Active |
| US5785495A | Fiber-repellant centrifugal pump | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6343909B1 | Centrifugal pump | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6273677A | Centrifugal pump with inflow guide device | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5846055A | Structured surfaces for turbo-machine parts | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5518256A | Floating-ring seal | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US7152620B2 | Flow-reversing valve | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7168927B2 | Pressure exchanger system | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5234316A | Filtering device for a canned motor | Electricity | 9 | Expired |
| US7815421B2 | Channel form for a rotating pressure exchanger | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US6017187A | Device for reducing noise in centrifugal pumps | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5808557A | Electronic sensor module | Physics | 9 | Expired |
| US5144177A | Canned motor pump with heat exchanger in rotor chamber | Electricity | 8 | Expired |
| US6146095A | Spiral housing pump | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7991586B2 | Device for transmitting measured values | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US5348444A | Single-blade impeller for centrifugal pumps | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US9176044B2 | Device and method for detecting deposits | Physics | 7 | Active |
| US5795540A | Corrosion and wear-resistant chill casting | Chemistry; Metallurgy | 7 | Expired |
| US5171126A | Centrifugal pump with an annular shroud | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6022000A | Valve device | Mechanical Engineering; Lighting; Heating | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.