QVF Engineering GmbH
4Patents
0Active
4Granted
25Portfolio score
Filing activity: May 22, 2000 → Feb 13, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6905141B2 | Glass elements with a conductive coating, the use thereof, as well as devices, installations and pipe conducts produced therefrom | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7234692B2 | Column tray | Performing Operations; Transporting | 6 | Expired |
| US6969446B1 | Method for producing concentrated nitric acid and installation for carrying out a method of this type | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6726188B2 | Structured mass transfer packing with improved baffles | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.