Yohei Nagai
15Patents
8h-index
8Co-inventors
65Inventor score
Filing activity: Oct 17, 1974 → Oct 25, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3960044A | Keyboard arrangement having after-control signal detecting sensor in electronic musical instrument | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4383462A | Electronic musical instrument | Physics | 50 | Expired |
| US4138915A | Electronic musical instrument producing tones by variably mixing different waveshapes | Physics | 38 | Expired |
| US4301704A | Electronic musical instrument | Physics | 37 | Expired |
| US4704931A | Acoustic tone inhibiting means for keyboard musical instrument | Physics | 36 | Expired |
| US4133242A | Waveshape memory type electronic musical instrument | Physics | 27 | Expired |
| US3943812A | Touch responsive sensor in electronic keyboard musical instrument | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4257303A | Electronic musical instrument of partials synthesis type | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4974485A | Electronic musical instrument | Physics | 6 | Expired |
| US4763553A | Electronic musical instrument | Physics | 5 | Expired |
| US4351212A | Electronic musical instrument with equally spaced binary note codes | Physics | 4 | Expired |
| US9407802B2 | Imaging apparatus | Electricity | 3 | Active |
| US4967635A | Electronic musical instrument | Physics | 2 | Expired |
| US9836659B2 | Vehicle-mounted image recognition apparatus and method of manufacturing the same | Electricity | 0 | Active |
| US10318825B2 | Vehicle-mounted image recognition apparatus and method of manufacturing the same | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.