Lawrence E. Vaughn
19Patents
6h-index
18Co-inventors
63Inventor score
Filing activity: Mar 27, 1986 → Aug 8, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6094977A | Brake cylinder leakage test method and device | Physics | 12 | Expired |
| US4775194A | Pneumatically operated graduated release valve for rail vehicles | Performing Operations; Transporting | 11 | Expired |
| US6334354B1 | Portable single car charging and test device | Physics | 9 | Expired |
| US6269682A | Portable single car test device | Physics | 8 | Expired |
| US6425282B2 | Portable single car test device | Physics | 7 | Expired |
| US6969485B2 | High volume production of low permeation plastic fuel tanks using parallel offset twinsheet pressure forming | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6327894A | Portable single car test device | Physics | 6 | Expired |
| US6648424B2 | Brake system with graduated empty/load | Performing Operations; Transporting | 4 | Expired |
| US4726628A | Protection valve device for spring parking brake systems | Performing Operations; Transporting | 4 | Expired |
| US8794717B2 | Automatic release hand brake control system | Emerging Cross-Sectional Technologies | 3 | Active |
| US7647816B2 | Single car test interface device | Physics | 3 | Active |
| US4714297A | Fluid pressure brake control portion | Performing Operations; Transporting | 3 | Expired |
| US6561595B2 | Brake assembly, system and method | Performing Operations; Transporting | 3 | Expired |
| US7631949B2 | Last car breakaway protection system | Performing Operations; Transporting | 2 | Expired |
| US4842341A | Brake pipe pressure modulating valve device | Performing Operations; Transporting | 1 | Expired |
| US11440522B2 | Combined dirt collector and cutout cock having controlled venting | Emerging Cross-Sectional Technologies | 1 | Active |
| US12005872B2 | Combined dirt collector and cutout cock having controlled venting | Emerging Cross-Sectional Technologies | 1 | Active |
| US9321446B2 | Differential relay type brake cylinder maintaining valve | Performing Operations; Transporting | 0 | Active |
| US9180853B2 | Automatic release hand brake control system | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.