Hisao Sonobe
15Patents
10h-index
28Co-inventors
72Inventor score
Filing activity: Sep 8, 1976 → Sep 15, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4502286A | Constant pressure type boiling cooling system | Electricity | 100 | Expired |
| US4330033A | Constant pressure type ebullient cooling equipment | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US4796993A | Phase modulation type fiber optic gyroscope | Physics | 27 | Expired |
| US6430066B2 | Electric power system having series connected capacitor | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4106557A | Open-type boiling cooling apparatus | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US5681989A | Intake air amount measuring apparatus for internal combustion engines | Physics | 16 | Expired |
| US5208652A | An improved optical branching/coupling unit for an optical fiber gyroscope, and navigation system employing the same | Physics | 16 | Expired |
| US5701177A | Method for detecting fault of optical fiber gyro and apparatus for diagnosing fault of the same | Physics | 14 | Expired |
| US6301957A | Fiber-optic cylinder pressure sensor | Physics | 12 | Expired |
| US6752014B1 | Hot-wire type air flow meter for internal combustion engine | Physics | 12 | Expired |
| US5264914A | Interference sensor and method utilizing extracted alliasing frequency components | Physics | 9 | Expired |
| US5608525A | Phase adjustable optical fiber gyro using both even order harmonics and an orthogonal component of an even-order harmonic | Physics | 3 | Expired |
| US5555235A | Optical fiber gyro with memory storing data measured under application of angular velocity | Physics | 2 | Expired |
| US8302476B2 | Angular velocity measuring device | Physics | 1 | Active |
| US5396327A | Fiber-optic gyroscope having angular velocity correction | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.