Membrex, Inc.
12Patents
0Active
12Granted
33Portfolio score
Filing activity: Jun 10, 1987 → Apr 21, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4790942A | Filtration method and apparatus | Emerging Cross-Sectional Technologies | 86 | Expired |
| US5000848A | Rotary filtration device with hyperphilic membrane | Performing Operations; Transporting | 86 | Expired |
| US4876013A | Small volume rotary filter | Emerging Cross-Sectional Technologies | 86 | Expired |
| US5143630A | Rotary disc filtration device | Performing Operations; Transporting | 73 | Expired |
| US5254250A | Rotary filtration device and filter pack therefor | Performing Operations; Transporting | 69 | Expired |
| US5944998A | Rotary filtration device with flow-through inner member | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4906379A | Hydrophilic article and method of producing same | Performing Operations; Transporting | 34 | Expired |
| US5707517A | Immersible rotary disc filtration device | Performing Operations; Transporting | 32 | Expired |
| US4911847A | Process for controlling the permeate composition in a rotary filtration device | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5993674A | Rotary disc filtration device with means to reduce axial forces | Performing Operations; Transporting | 20 | Expired |
| US4867878A | Liquid bearing for rotary apparatus | Performing Operations; Transporting | 14 | Expired |
| US5820690A | Cleaning processes using cleaners exhibiting cloud point behavior | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.