William James Duncan
16Patents
6h-index
17Co-inventors
63Inventor score
Filing activity: Oct 25, 1977 → Mar 31, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5055051A | Semi-anthropomorphic biliary/renal training phantom for medical imaging and lithotripsy training | Physics | 151 | Expired |
| US4452508A | Graded index optical fibres | Physics | 16 | Expired |
| US7266525B1 | Invoiceless trading and settlement method and system | Physics | 15 | Expired |
| US4802325A | Method of packaging | Performing Operations; Transporting | 13 | Expired |
| US7716130B2 | Invoiceless trading and settlement method and system | Physics | 13 | Active |
| US4145869A | Slub yarn and method of forming same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8083628B2 | Differential carrier assembly for a vehicle | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8515867B1 | Invoiceless trading and settlement method and system | Physics | 3 | Active |
| US8660947B2 | Invoiceless trading and settlement method and system | Physics | 3 | Active |
| US8762273B1 | Invoiceless trading and settlement method and system | Physics | 2 | Active |
| US5838025A | Electrical barrier structure for semiconductor device doped with chromium and/or titanium | Electricity | 2 | Expired |
| US4318690A | Venting process for organic heat transfer media | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US9811817B2 | Invoiceless trading and settlement method and system | Physics | 1 | Active |
| US8585535B2 | High torque capacity three output differential | Emerging Cross-Sectional Technologies | 1 | Active |
| US10115098B2 | Invoiceless trading and settlement method and system | Physics | 0 | Active |
| US12429400B1 | Optical transmission tester | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.