Delbag-Luftfilter GmbH
8Patents
0Active
8Granted
26Portfolio score
Filing activity: Aug 4, 1976 → May 18, 1983
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4225328A | Exchangeable filter element | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4334900A | Filter elements arranged in waste tanks for separating substances which are harmful to the health from flowing air in connection with nuclear installations | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4247315A | Filter element | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4197098A | Filter bypass measurement section | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4193844A | Method of mounting filter elements and mounting therefor | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4095965A | Absorption filter | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4472184A | Support and holding frame for air filtering elements | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4243486A | Method of mounting filter elements and mounting therefor | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.