William E. Hughes
21Patents
12h-index
32Co-inventors
81Inventor score
Filing activity: Aug 21, 1980 → Nov 30, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4403567A | Workpiece holder | Electricity | 48 | Expired |
| US4517404A | Multiple fluid conveying hose assembly and method of making same | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4481062A | Electron bombardment ion sources | Electricity | 36 | Expired |
| US5632239A | Method of distributing air in an engine intake manifold | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5628285A | Drain valve for a marine engine | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5980342A | Flushing system for a marine propulsion engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4987706A | Controlled-environment entertainment center | Fixed Constructions | 19 | Expired |
| US6135064A | Engine drain system | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US7243978B2 | Door assembly for a vehicle | Fixed Constructions | 18 | Expired |
| US6089934A | Engine cooling system with simplified drain and flushing procedure | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5190322A | Sealing cuff for blow molded plastic components | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5590628A | Multi-mode intake manifold assembly for internal combustion engines | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6390870B1 | Marine engine cooling system with simplified water drain and flushing mechanism | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6343965B1 | Pneumatically actuated marine engine water drain system | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5579727A | Separating apparatus for the cooling system of a marine engine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7178848B1 | Utility rack arrangement for a vehicle | Performing Operations; Transporting | 7 | Expired |
| US5727069A | Solid state musical instrument amplifier with vacuum tube signal magnitude limiting | Electricity | 7 | Expired |
| US6816009B2 | Circuit and method for a transimpedance audio amplifier providing variable gain while maintaining load impedance | Electricity | 7 | Expired |
| US5664526A | Apparatus for separating solid material from cooling water in a marine engine block | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6929520B1 | Cooling method for a marine propulsion system | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5256930A | Cooled plasma source | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.