HYDAC PROCESS TECHNOLOGY GMBH
42Patents
34Active
42Granted
51Portfolio score
Filing activity: Oct 1, 1999 → Jan 13, 2021 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6343697B1 | Filter device with filter disks | Performing Operations; Transporting | 23 | Expired |
| US7210584B2 | Filter device, in particular for high-pressure applications in a molten polymer filtration | Performing Operations; Transporting | 8 | Expired |
| US9004106B2 | Switching apparatus for a fluid flow | Emerging Cross-Sectional Technologies | 8 | Active |
| US6579348B1 | Method for producing a sealing connection | Emerging Cross-Sectional Technologies | 7 | Expired |
| US11278826B2 | Filter apparatus | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US7691274B2 | Filter installation and method for operating one such filter installation | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6836963B2 | Process for production of conical filter elements | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8967415B2 | Vessel, in particular pressure vessel | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US7883559B2 | System for gas cleaning | Emerging Cross-Sectional Technologies | 2 | Active |
| US9180388B2 | Filter device for fluids | Performing Operations; Transporting | 2 | Active |
| US10981092B2 | Filter device | Performing Operations; Transporting | 2 | Active |
| US8663352B2 | System for purifying gas | Performing Operations; Transporting | 1 | Active |
| US8216469B2 | Filter device | Performing Operations; Transporting | 1 | Active |
| US8518274B2 | Filter device operating method | Performing Operations; Transporting | 1 | Active |
| US9833733B2 | Apparatus for conditioning of gases | Performing Operations; Transporting | 1 | Active |
| US7681739B2 | Filter device | Performing Operations; Transporting | 1 | Expired |
| US8202422B2 | Fluid system | Emerging Cross-Sectional Technologies | 1 | Active |
| US6604928B1 | Filtering device and spinning head | Textiles; Paper | 1 | Expired |
| US11020692B2 | System for filtering fluids | Performing Operations; Transporting | 1 | Active |
| US11325056B2 | Phase separation device | Performing Operations; Transporting | 1 | Active |
| US10537834B2 | Filter apparatus | Performing Operations; Transporting | 0 | Active |
| US12201933B2 | Device for the treatment of fluid mixtures | Physics | 0 | Active |
| US11607630B2 | Filter device | Performing Operations; Transporting | 0 | Active |
| US11801463B2 | Filter apparatus | Performing Operations; Transporting | 0 | Active |
| US10905980B2 | Filter device, hydraulic system and backwashing method | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.