William E. Simpson
20Patents
8h-index
18Co-inventors
72Inventor score
Filing activity: Apr 6, 1981 → Jul 14, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7066412B2 | Apparatus, methods, and compositions for adding fragrance to laundry | Textiles; Paper | 35 | Expired |
| US5061007A | Torsionally adjustable vehicle wing for uneven application of negative lift to the wheels | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5954194A | Gemstone gift card with video or audio device carrier | Physics | 20 | Expired |
| USD646754S1 | Insert for a closure for a container | General | 19 | Expired |
| US7654421B2 | Automatically configurable chemical dosing apparatus for cleaning equipment | Textiles; Paper | 18 | Active |
| USD602120S1 | Lock-out closure for a container with a corresponding lock-out dispenser insert | General | 12 | Expired |
| US4446890A | Continuity actuated isolation valve assembly | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD707134S1 | Package with an interior concentrate compartment | General | 10 | Active |
| US9090450B2 | Lock-out device and method | Performing Operations; Transporting | 8 | Active |
| US8979196B2 | Removably engaged wheelchair headrest | Human Necessities | 7 | Active |
| US6357584B1 | Item and product sample card with video or audio device carrier | Physics | 4 | Expired |
| US4503886A | Flow limiting selector valve | Emerging Cross-Sectional Technologies | 3 | Expired |
| USD619681S1 | Closure for a container | General | 3 | Expired |
| USD601660S1 | Lock-out closure for a container with a corresponding lock-out dispenser insert | General | 3 | Expired |
| US9708172B2 | Lock-out device and method | Performing Operations; Transporting | 2 | Active |
| US4343059A | Radioactive hot cell access hole decontamination machine | Performing Operations; Transporting | 2 | Expired |
| USD629870S1 | Closure for a container | General | 1 | Expired |
| US10301168B2 | Lock-out device and method | Performing Operations; Transporting | 0 | Active |
| US8584690B2 | Material delivery systems and methods | Emerging Cross-Sectional Technologies | 0 | Active |
| US6273249A | Novelty item and product sample card with video or audio device carrier | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.