Hiroshi Fujita
223Patents
18h-index
314Co-inventors
89Inventor score
Filing activity: Jun 24, 1974 → Nov 16, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5482029A | Variable flexibility endoscope system | Human Necessities | 311 | Expired |
| US6868195B2 | Device for detecting three-dimensional shapes of elongated flexible body | Physics | 133 | Expired |
| US6018694A | Controller for hybrid vehicle | Emerging Cross-Sectional Technologies | 116 | Expired |
| US6803766B2 | Battery pack voltage detection apparatus | Emerging Cross-Sectional Technologies | 77 | Expired |
| US6082373A | Cleaning method | Electricity | 56 | Expired |
| US4152618A | Light-emitting display device including light diffusing film | Emerging Cross-Sectional Technologies | 48 | Expired |
| USD521925S1 | Tire tread | General | 38 | Expired |
| US4168102A | Light-emitting display device including a light diffusing bonding layer | Electricity | 37 | Expired |
| USD521926S1 | Tire tread | General | 36 | Expired |
| US4780300A | Process for reforming methanol | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5650708A | Inverter control apparatus using a two-phase modulation method | Emerging Cross-Sectional Technologies | 30 | Expired |
| US7684851B2 | Body cavity interior observing apparatus | Human Necessities | 27 | Active |
| US4612059A | Method of producing a composite material composed of a matrix and an amorphous material | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6230738A | Flow rate control valve and flow rate control system | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4668527A | Method for amorphizing a material by means of injection of exotic atoms into a solid with electron beams | Electricity | 20 | Expired |
| US7428052B2 | Optical tomographic apparatus | Human Necessities | 20 | Active |
| US10377174B2 | Bicycle hub assembly | Performing Operations; Transporting | 19 | Active |
| US5380609A | Method for fabricating photomasks having a phase shift layer comprising the use of a positive to negative resist, substrate imaging and heating | Physics | 19 | Expired |
| US4986481A | Automatic paper feeder for document shredder | Performing Operations; Transporting | 18 | Expired |
| US6970807B2 | Diagnostic system and method for electric leak detecting device | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7078908B2 | Voltage detecting apparatus applicable to a combination battery | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7372575B2 | Optical tomographic apparatus | Human Necessities | 16 | Active |
| US4755852A | Exposure control device for a copier | Physics | 16 | Expired |
| US10507690B2 | Bicycle hub assembly | Performing Operations; Transporting | 15 | Active |
| US5373532A | .pi./4 quadrature phase shift keying modulator | Electricity | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.