Sumio Yamada
28Patents
9h-index
57Co-inventors
78Inventor score
Filing activity: Feb 6, 1980 → Mar 27, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4757581A | Method for producing a piezoelectric resonator | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4468582A | Piezoelectric resonator chip and trimming method for adjusting the frequency thereof | Electricity | 29 | Expired |
| US4454444A | LiTaO.sub.3 Piezoelectric resonator | Electricity | 26 | Expired |
| US5757107A | Tuning-fork vibratory gyro and sensor system using the same | Physics | 17 | Expired |
| US5861705A | Tuning-fork vibratory gyro and sensor system using the same | Electricity | 14 | Expired |
| US6255916A | Resonator-type surface-acoustic-wave filter for reducing the signal strength of a spurious peak | Electricity | 13 | Expired |
| US7296471B2 | Acceleration sensor | Electricity | 12 | Expired |
| US4583019A | Piezoelectric resonator using 165.degree. Y-cut LiNbO.sub.3 | Electricity | 11 | Expired |
| US6253613A | Tuning fork vibratory gyro utilizing a piezoelectric transversal effect | Physics | 11 | Expired |
| US6404108B1 | Piezoelectric actuator | Electricity | 9 | Expired |
| US6177756A | Piezoelectric gyro and method of driving the piezoelectric gyro | Physics | 9 | Expired |
| US6230562A | Detection circuit for vibratory gyro and vibratory gyro device using the same | Physics | 5 | Expired |
| US4263043A | Desulfurizing agent for injection | Chemistry; Metallurgy | 4 | Expired |
| US5356454A | Mold powder for continuous casting | Performing Operations; Transporting | 4 | Expired |
| US4426595A | Acoustic surface wave device with improved band-pass characteristics | Electricity | 4 | Expired |
| US6484576B2 | Tuning-fork vibratory gyro | Physics | 2 | Expired |
| US5567222A | Method of controlling slag coating of a steel converter | Chemistry; Metallurgy | 2 | Expired |
| US5775404A | Method of continuously casting austenitic stainless steel | Performing Operations; Transporting | 1 | Expired |
| US10657840B2 | Image forming apparatus | Human Necessities | 1 | Active |
| US4543125A | Process of making steel in converter using a great amount of iron-bearing cold material | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7360426B2 | Acceleration sensor | Physics | 1 | Active |
| US5028388A | Method for producing chromium containing molten iron with low sulphur concentration | Chemistry; Metallurgy | 1 | Expired |
| US10691297B2 | Display control device | Physics | 0 | Active |
| US9571987B2 | Seat management system | Electricity | 0 | Active |
| US4919713A | Process for producing chromium containing molten iron | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.