Hiroshi Ichikawa
109Patents
17h-index
200Co-inventors
89Inventor score
Filing activity: Mar 6, 1974 → Mar 29, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5592094A | Batterey discharge characteristics calculation method and remaining battery capacity measuring device | Emerging Cross-Sectional Technologies | 141 | Expired |
| US5266930A | Display apparatus | Physics | 120 | Expired |
| US5668357A | Seat combination switch | Electricity | 39 | Expired |
| US6335901B1 | Semiconductor device | Physics | 37 | Expired |
| US7180473B2 | Antenna with built-in filter | Electricity | 36 | Expired |
| US4907836A | Wire harness mounting structure for motor vehicle door | Performing Operations; Transporting | 36 | Expired |
| US5092647A | Wire harness mounting structure for motor vehicle door | Performing Operations; Transporting | 34 | Expired |
| US8275600B2 | Machine learning for transliteration | Physics | 27 | Active |
| US5119218A | Liquid crystal display device having varistor elements | Electricity | 25 | Expired |
| US4375229A | Method and apparatus of automatically positioning wire ends for multi-mode end processing | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6207262A | Coated cemented carbide endmill having hard-material-coated-layers excellent in adhesion | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7132984B2 | Antenna with built-in filter | Electricity | 20 | Expired |
| US6754133B2 | Semiconductor device | Physics | 20 | Expired |
| US4986631A | Automotive display system | Physics | 19 | Expired |
| US6217997A | Ceramic fiber reinforced ceramic matrix composite material and method of producing the same | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6969064B2 | Paper sheet storing and releasing apparatus | Performing Operations; Transporting | 18 | Expired |
| US5744931A | Battery remaining capacity measuring apparatus | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6911942B2 | Antenna apparatus and communication apparatus using the same | Electricity | 14 | Expired |
| US5663866A | Meter module | Performing Operations; Transporting | 14 | Expired |
| US5098784A | Supports for gas chromatography comprising aggregates of finely divided carbon particles and process for preparing the same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6897684B2 | Input buffer circuit and semiconductor memory device | Electricity | 14 | Expired |
| US4507354A | Electromagnetic wave absorbers of silicon carbide fibers | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7598921B2 | Folded antenna | Electricity | 12 | Active |
| US4382111A | Method of treating fiber | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6496403B2 | Semiconductor memory device | Physics | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.