Dyckerhoff & Widman AG
3Patents
0Active
3Granted
26Portfolio score
Filing activity: Nov 17, 1978 → Dec 7, 1979
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4229501A | Steel rods, especially reinforcing or tensioning rods | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4235055A | System for anchoring stressed tension members in a concrete component | Fixed Constructions | 12 | Expired |
| US4351486A | Process and a grinding stone for preparing mechanical wood pulp | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.