Extraction Systems, Inc.
15Patents
0Active
15Granted
31Portfolio score
Filing activity: Dec 3, 1993 → Sep 24, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6096267A | System for detecting base contaminants in air | Emerging Cross-Sectional Technologies | 482 | Expired |
| US5607647A | Air filtering within clean environments | Performing Operations; Transporting | 53 | Expired |
| US5856198A | Performance monitoring of gas-phase air filters | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5833726A | Storing substrates between process steps within a processing facility | Performing Operations; Transporting | 43 | Expired |
| US5582865A | Non-woven filter composite | Performing Operations; Transporting | 40 | Expired |
| US5462485A | Controlling air quality | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6207460A | Detection of base contaminants in gas samples | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6447584B1 | Filters employing porous strongly acidic polymers | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6740147B2 | Filters employing both acidic polymers and physical-adsorption media | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6296806A | Protection of semiconductor fabrication and similar sensitive processes | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6761753B2 | Methods using filters employing both acidic polymers and physical-adsorption media | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6610128B2 | Filters employing porous strongly acidic polymers | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6855557B2 | Detection of base contaminants in gas samples | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6620630B2 | System and method for determining and controlling contamination | Performing Operations; Transporting | 3 | Expired |
| US6759254B2 | System and method for determining and controlling contamination | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.