Kouichi Yamaguchi
69Patents
15h-index
86Co-inventors
87Inventor score
Filing activity: Dec 12, 1975 → Jul 11, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4888059A | Cement dispersing agent | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6160465A | High-frequency choke coil | Electricity | 50 | Expired |
| US5581224A | Choke coil for eliminating common mode noise and differential mode noise | Electricity | 47 | Expired |
| US4657774A | Method for thin film formation | Chemistry; Metallurgy | 47 | Expired |
| US5404422A | Speech recognition system with neural network | Physics | 43 | Expired |
| US5977853A | Choke coil for eliminating common mode noise and normal mode noise | Electricity | 42 | Expired |
| US6027791A | Structure for mounting a wiring board | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6200684A | Perfluoropolyether-modified aminosilane, surface treating agent, and aminosilane-coated article | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4985526A | Curable silicone composition | Chemistry; Metallurgy | 32 | Expired |
| US5175793A | Recognition apparatus using articulation positions for recognizing a voice | Physics | 30 | Expired |
| US5326611A | Cover-gasket assembly for hard disk device | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5793273A | Choke coil for suppressing common-mode noise and normal-mode noise | Electricity | 22 | Expired |
| US5763059A | Circuit board | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4676194A | Apparatus for thin film formation | Chemistry; Metallurgy | 20 | Expired |
| US5629661A | Choke coil for eliminating common mode noise and normal mode noise | Electricity | 17 | Expired |
| US5612748A | Sub-sample transmission system for improving picture quality in motional picture region of wide-band color picture signal | Electricity | 15 | Expired |
| US6570425B2 | Phase difference signal generator and multi-phase clock signal generator having phase interpolator | Electricity | 15 | Expired |
| US5506559A | Choke coil for eliminating common mode noise and normal mode noise | Electricity | 14 | Expired |
| US5422619A | Common mode choke coil | Electricity | 14 | Expired |
| US9071288B2 | Inductive-coupling system and method with compensation to prevent interference | Electricity | 14 | Active |
| US5889322A | Low-temperature calcined ceramics | Electricity | 13 | Expired |
| US5370951A | Frame-supported pellicle for protection of photolithographic mask | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7012036B2 | ZrO2-Al2O3 composite ceramic material and production method thereof | Chemistry; Metallurgy | 12 | Expired |
| US4804709A | Fluorine-containing coating agents | Chemistry; Metallurgy | 11 | Expired |
| US5635890A | Choke coil | Electricity | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.