Stephen O'Brien
15Patents
7h-index
22Co-inventors
66Inventor score
Filing activity: Oct 15, 1991 → Aug 13, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5343680A | Suspension mechanism for reel mowers | Emerging Cross-Sectional Technologies | 67 | Expired |
| US5476794A | Detection method for checking surfaces for nitrogen-containing explosives or drugs | Emerging Cross-Sectional Technologies | 38 | Expired |
| US8182786B2 | Nano-sized particles, processes of making, compositions and uses thereof | Chemistry; Metallurgy | 26 | Active |
| US5950410A | Hydraulically powered baler plunger drive mechanism | Human Necessities | 19 | Expired |
| US8925672B2 | Steering control system for hydrostatically driven front vehicle ground wheels and steerable rear caster wheels | Performing Operations; Transporting | 16 | Active |
| US5170613A | Reel motor cutting unit frame | Emerging Cross-Sectional Technologies | 12 | Expired |
| US9120504B2 | Steering linkage interface between steering cylinder and ground drive pump displacement control arms | Performing Operations; Transporting | 8 | Active |
| US10212886B2 | Retraction mechanism for extendable carriages of an agricultural accumulator | Human Necessities | 3 | Active |
| US8367034B2 | Methods for preparing single-walled carbon nanotubes | Chemistry; Metallurgy | 2 | Active |
| US11051456B2 | Bale weight measurement and control system using liftgate | Human Necessities | 2 | Active |
| US9108850B2 | Preparing nanoparticles and carbon nanotubes | Emerging Cross-Sectional Technologies | 1 | Active |
| US11096331B2 | Bale wrap removal device utilizing shape memory wire | Performing Operations; Transporting | 0 | Active |
| US10537064B2 | Retraction mechanism for extendable carriages of an agricultural accumulator | Human Necessities | 0 | Active |
| US9359259B2 | Multi-metal oxide ceramic nanomaterial | Chemistry; Metallurgy | 0 | Active |
| US10118862B2 | Multi-metal oxide ceramic nanomaterial | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.