Hiroshi Imai
187Patents
20h-index
214Co-inventors
93Inventor score
Filing activity: Feb 17, 1978 → Jul 28, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6495194B2 | Processed whey protein and process for manufacturing the same | Human Necessities | 133 | Expired |
| US6242787A | Semiconductor device and manufacturing method thereof | Electricity | 96 | Expired |
| US4866776A | Audio speaker system for automotive vehicle | Electricity | 83 | Expired |
| US5971019A | Mismating-free connector assembly | Emerging Cross-Sectional Technologies | 61 | Expired |
| US4641344A | Audio equipment | Electricity | 56 | Expired |
| US4341841A | Multi-layer coating protective film form | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5090764A | Vehicle body construction for hardtop convertible | Performing Operations; Transporting | 44 | Expired |
| US6644130B2 | Ultrasonic flow meter having a tubular elastic transducer holding unit | Physics | 39 | Expired |
| US4703502A | Stereo signal reproducing system | Electricity | 38 | Expired |
| US4995665A | Sunroof structure for motor vehicle | Performing Operations; Transporting | 32 | Expired |
| US4340646A | Multi-layer reflectors | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4358507A | Multi-layer reflectors | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4425604A | Illuminating device for a display unit | Physics | 28 | Expired |
| US5129004A | Automotive multi-speaker audio system with different timing reproduction of audio sound | Physics | 28 | Expired |
| USD556775S1 | Sound reproduction machine | General | 26 | Expired |
| US8916999B2 | Motors containing segment conductor coils | Electricity | 25 | Active |
| USD463455S1 | Power shovel | General | 23 | Expired |
| US6831331B2 | Power MOS transistor for absorbing surge current | Electricity | 22 | Expired |
| US5186489A | Airbag restraint system | Performing Operations; Transporting | 21 | Expired |
| US5759090A | Sanding pad containing a heat distortable polymer and sanding process using same | Performing Operations; Transporting | 20 | Expired |
| US5821611A | Semiconductor device and process and leadframe for making the same | Electricity | 19 | Expired |
| US4694497A | Automotive multi-speaker audio system with automatic echo-control feature | Physics | 19 | Expired |
| US5799145A | Disk drive apparatus having security function using password | Physics | 19 | Expired |
| US4720867A | Woofer system for an automotive audio system with a protecter therefor | Electricity | 18 | Expired |
| US4710830A | Sealed disc drive assembly with internal air filter | Physics | 18 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.