Ralph P. Palmer
15Patents
10h-index
13Co-inventors
69Inventor score
Filing activity: Jun 8, 1988 → Jul 16, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5474348A | Motorized actuator for mortise lockset | Emerging Cross-Sectional Technologies | 73 | Expired |
| US5794472A | Disconnecting drive mechanism for cylindrical lockset | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6442986B1 | Electronic token and lock core | Emerging Cross-Sectional Technologies | 49 | Expired |
| US4998760A | Door handle return assembly | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6684671B2 | Vending machine lock | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5116170A | Drill jig for preparing a door to receive a cylindrical lock | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5931430A | Motor assembly for cylindrical lockset | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6840072B2 | Electronic token and lock core | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6668606B1 | Electronic token lock core | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4843852A | Disposable construction core | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5232255A | Button assembly | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7191624B2 | Vending machine lock | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7316140B2 | Electronic token and lock core | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8836474B2 | Electronic access memory device and access point control | Emerging Cross-Sectional Technologies | 0 | Active |
| US8487742B1 | Electronic token and lock | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.