WATERS GMBH
35Patents
4Active
35Granted
37Portfolio score
Filing activity: Nov 19, 1973 → Jan 13, 2016 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4011451A | Novel photometric system | Physics | 49 | Expired |
| US4094641A | Low loss sample bottle assembly | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4094196A | Sample injection with automatic cleaning of sampling conduit | Physics | 41 | Expired |
| US4250035A | Radial compression of packed beds | Physics | 40 | Expired |
| US4026803A | Chromatographic column with improved end fittings | Physics | 39 | Expired |
| US5928506A | Water purifier for drinking water | Chemistry; Metallurgy | 33 | Expired |
| US4094195A | Novel seal and apparatus including same | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4070004A | Diaphragm valve | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US3981620A | Pumping apparatus | Physics | 26 | Expired |
| US4211658A | Triaxially compressed packed beds | Physics | 24 | Expired |
| US4245963A | Pump | Physics | 24 | Expired |
| US6106721A | Water-wettable chromatographic media for solid phase extraction | Performing Operations; Transporting | 20 | Expired |
| US6790361B2 | Mobile phase dilution scheme for enhanced chromatography | Physics | 20 | Expired |
| US5976367A | Water-wettable chromatographic media for solid phase extraction | Performing Operations; Transporting | 19 | Expired |
| US4276475A | Novel photometric system | Physics | 17 | Expired |
| US6254780A | Water-wettable chromatographic media for solid phase extraction | Performing Operations; Transporting | 16 | Expired |
| US4228007A | Chromatographic cartridge and holder | Physics | 16 | Expired |
| US3958898A | Pump control systems | Physics | 15 | Expired |
| US4333977A | Wear-resistant article | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4070285A | Chromatography tube | Physics | 12 | Expired |
| US4042327A | Ion-pairing chromatography | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4286873A | Refractometer cell with integral lens | Physics | 12 | Expired |
| US4284352A | Heat exchanger for refractometer | Physics | 11 | Expired |
| US4153076A | Pneumatic valve apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5014768A | Chill plate having high heat conductivity and wear resistance | Performing Operations; Transporting | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.