David E. Frye
12Patents
6h-index
8Co-inventors
59Inventor score
Filing activity: Dec 24, 1984 → Aug 31, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6652038B1 | Towing and towed vehicle braking system | Performing Operations; Transporting | 36 | Expired |
| US4685408A | Cloth stitching apparatus and method | Textiles; Paper | 22 | Expired |
| US4601249A | Cloth stitching apparatus and method | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5346289A | Control valve for hydraulic braking system | Performing Operations; Transporting | 13 | Expired |
| US5779324A | Towed vehicle brake system | Performing Operations; Transporting | 8 | Expired |
| US5735124A | Internally boosted master cylinder | Performing Operations; Transporting | 7 | Expired |
| US5775102A | Power-assisted hydraulic steering system | Performing Operations; Transporting | 6 | Expired |
| US5368372A | Hydraulic brake system for an off-road vehicle | Performing Operations; Transporting | 4 | Expired |
| US5590612A | Bag making machine | Textiles; Paper | 0 | Expired |
| US10103537B2 | Ground fault detection and interrupt system | Emerging Cross-Sectional Technologies | 0 | Active |
| US10134216B2 | Bill magazine with an anti-string feature for use with a vending machine | Physics | 0 | Active |
| US5655429A | Hydraulic pilot brake valve | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.