Takashi Kawashima
123Patents
10h-index
192Co-inventors
83Inventor score
Filing activity: Feb 20, 1987 → Mar 8, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6347212B1 | Image forming apparatus having improved image carrier cleaning | Physics | 50 | Expired |
| US5018317A | Abrasive water jet cutting apparatus | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7319320B2 | Rotation angle detecting device | Physics | 44 | Expired |
| US4872293A | Abrasive water jet cutting apparatus | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6961579B2 | Control system and method for a wireless communications terminal | Electricity | 23 | Expired |
| US7197916B2 | Misfire detector using linear detection of crankshaft angular speed | Physics | 23 | Expired |
| US7030608B2 | Rotational angle sensing device and assembling method thereof | Physics | 15 | Expired |
| US7002339B2 | Rotation angle detecting device | Physics | 12 | Expired |
| US6714229B2 | Image forming apparatus | Performing Operations; Transporting | 12 | Expired |
| US7221157B2 | Magnetic sensor apparatus and manufacturing method thereof | Electricity | 10 | Expired |
| USD796978S1 | Socket for electronic device testing apparatus | General | 10 | Active |
| US4901193A | Construction of fitting flexible board within electronic apparatus | Electricity | 10 | Expired |
| US5096013A | Reduced-noise propulsion system of air-cushion vehicle | Performing Operations; Transporting | 9 | Expired |
| US8893039B2 | Apparatus and method for automatic focus shift | Physics | 9 | Active |
| US7915889B2 | Linear displacement detection apparatus | Physics | 8 | Active |
| US7202618B2 | Inverter device | Electricity | 8 | Expired |
| US7218100B1 | Rotation angle detecting device having function of detecting abnormality | Physics | 8 | Active |
| US5572297A | Developer dispersing device | Physics | 7 | Expired |
| US5734163A | Zero method of controlling quadrupole mass spectrometer and control circuit arrangement to carry out this method | Electricity | 7 | Expired |
| US7071683B2 | Rotation angle sensing device having enlarged detectable angle range | Physics | 6 | Expired |
| US7663360B2 | Rotation angle detecting device | Physics | 6 | Active |
| US7893688B2 | Permanent magnet type position sensor | Physics | 5 | Active |
| US8604732B2 | Inverter unit | Electricity | 4 | Active |
| US7180694B2 | Recording and/or reproducing apparatus, recording and/or reproducing method, recording medium and program | Physics | 4 | Expired |
| US7560919B2 | Rotation angle using orthogonal magnetic sensing elements in close proximity to each other | Physics | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.