FILTRATION GROUP GMBH
14Patents
4Active
14Granted
35Portfolio score
Filing activity: May 30, 1991 → Feb 12, 2020 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6099612A | Side access filter support and sealing system | Performing Operations; Transporting | 60 | Expired |
| US7753977B2 | Air filtration system having a removable diffuser | Emerging Cross-Sectional Technologies | 55 | Active |
| US5268095A | Self-cleaning filter | Performing Operations; Transporting | 49 | Expired |
| USD544949S1 | Air filter | General | 37 | Expired |
| US6955696B1 | Filter frame and assembly | Emerging Cross-Sectional Technologies | 33 | Expired |
| US7156891B2 | Forced air system air filter | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5514270A | Plural layer fiber filter element and system for cleaning | Performing Operations; Transporting | 18 | Expired |
| US6179888A | Hybrid filter bag assembly | Performing Operations; Transporting | 9 | Expired |
| US6258142A | Multi-pocket filter | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5549825A | Liquid filter structure | Performing Operations; Transporting | 6 | Expired |
| US6159316A | Method of making multi-pocket filter | Emerging Cross-Sectional Technologies | 4 | Expired |
| US10232295B2 | Filter including support frame | Performing Operations; Transporting | 4 | Active |
| US10279295B2 | Methods, apparatus and products for filtering | Performing Operations; Transporting | 0 | Active |
| US11383186B2 | Filter | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.