Norbert Hahn
114Patents
31h-index
91Co-inventors
93Inventor score
Filing activity: Jul 26, 1977 → Oct 27, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4472099A | Releasable locking device | Emerging Cross-Sectional Technologies | 78 | Expired |
| US4373847A | Releasable locking device | Performing Operations; Transporting | 78 | Expired |
| US4560315A | Vehicle restraint | Performing Operations; Transporting | 75 | Expired |
| US4995130A | Dock leveler lift assembly and method for operation | Performing Operations; Transporting | 71 | Expired |
| US4443150A | Releasable locking device | Performing Operations; Transporting | 67 | Expired |
| US5299386A | Safety gate assembly | Fixed Constructions | 63 | Expired |
| US4208161A | Device for releasably securing a vehicle to an adjacent support | Performing Operations; Transporting | 62 | Expired |
| US4744121A | Loading dock and hydraulic system therefor | Performing Operations; Transporting | 62 | Expired |
| US4605353A | Vehicle restraint | Emerging Cross-Sectional Technologies | 62 | Expired |
| US4634334A | Vehicle restraint | Performing Operations; Transporting | 60 | Expired |
| US5582498A | Wheel activated vehicle restraint | Performing Operations; Transporting | 58 | Expired |
| US6092970A | Manually positioned wheel chocking apparatus | Performing Operations; Transporting | 57 | Expired |
| US5762459A | Wheel-activated vehicle restraint system | Performing Operations; Transporting | 57 | Expired |
| US5375965A | Vehicle restraining device | Performing Operations; Transporting | 54 | Expired |
| US4692755A | Loading dock signal and control system | Performing Operations; Transporting | 54 | Expired |
| US7506694B2 | Rotary tool | Performing Operations; Transporting | 54 | Expired |
| US5440772A | Vehicle-activated safety leg control system for a dock leveler assembly | Performing Operations; Transporting | 50 | Expired |
| US4379354A | Releasable locking device | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4191503A | Device for releasably securing one unit against a second unit | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5453735A | Loading dock signal and control system | Performing Operations; Transporting | 45 | Expired |
| US5442825A | Dock leveler weather seal | Performing Operations; Transporting | 43 | Expired |
| US5271183A | Safety barrier assembly | Fixed Constructions | 42 | Expired |
| US6773221B2 | Positive locking mechanism for a wheel-activated vehicle restraint | Performing Operations; Transporting | 41 | Expired |
| US5311628A | Dock leveler with an improved automatic material handling vehicle barrier | Performing Operations; Transporting | 38 | Expired |
| US4920598A | Dock leveler with automatic vehicle barrier | Performing Operations; Transporting | 38 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.