Forrest H. Ballinger
13Patents
7h-index
8Co-inventors
59Inventor score
Filing activity: Aug 6, 1984 → Jun 24, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4581700A | Processing system for grade crossing warning | Performing Operations; Transporting | 29 | Expired |
| US5628479A | Vital wheel detector | Performing Operations; Transporting | 25 | Expired |
| US4934633A | Crossing control unit | Performing Operations; Transporting | 15 | Expired |
| US5170970A | Method and apparatus for improving rail shunts | Performing Operations; Transporting | 13 | Expired |
| US5924652A | Island presence detected | Performing Operations; Transporting | 12 | Expired |
| US4868538A | Random signature island circuit | Performing Operations; Transporting | 8 | Expired |
| US9019115B2 | Warning horn control system, radar system, and method | Physics | 8 | Active |
| US7292144B2 | Apparatus and method for contact-less switching | Performing Operations; Transporting | 7 | Expired |
| US5436787A | Surge arrestor unit | Electricity | 3 | Expired |
| US8149129B2 | Signal alignment monitoring system and method of assembling the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US8764461B2 | System for electrically connecting conductor to track member | Electricity | 0 | Active |
| US8376286B2 | Foreign track current suppression system and method | Performing Operations; Transporting | 0 | Active |
| US10292230B2 | System and method for controlling a wayside device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.