William E. Hill
19Patents
11h-index
19Co-inventors
69Inventor score
Filing activity: Mar 7, 1969 → Aug 17, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5365025A | Low backpressure straight-through reactive and dissipative muffler | Mechanical Engineering; Lighting; Heating | 46 | Expired |
| US4077921A | Sprayable low density ablator and application process | Chemistry; Metallurgy | 39 | Expired |
| US7434570B2 | Snap-action valve for exhaust system | Mechanical Engineering; Lighting; Heating | 31 | Active |
| US5519994A | Muffler with inlet pipe equalizer | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US8657065B1 | Exhaust valve with resilient spring pad | Mechanical Engineering; Lighting; Heating | 22 | Active |
| US7896130B2 | Snap action valve with inertia damper | Mechanical Engineering; Lighting; Heating | 20 | Active |
| US8468813B2 | Snap-action valve for exhaust system | Mechanical Engineering; Lighting; Heating | 18 | Active |
| US5064868A | Sprayable lightweight ablative coating | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4953660A | Muffler with two part housing and flow tubes | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4865154A | Muffler with drain holes | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7775322B2 | Snap-action valve for exhaust system | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US8191572B2 | Snap action valve with bumper pad | Emerging Cross-Sectional Technologies | 9 | Active |
| US4442297A | Manganese compounds and sorption of gases using manganese compounds | Performing Operations; Transporting | 8 | Expired |
| US4457898A | Managanese compounds and sorption of gases using manganese compounds | Performing Operations; Transporting | 7 | Expired |
| US10180092B2 | Flutter dampened exhaust valve | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US8381401B2 | Method of installing rotatable flapper valve to an interior of a conduit | Emerging Cross-Sectional Technologies | 7 | Active |
| US8215103B2 | Snap-action valve for exhaust system | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US10598059B2 | Slotted snap-action valve assembly for exhaust system | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US3962297A | High burning rate catalyst | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.