Akira Hasegawa
269Patents
32h-index
367Co-inventors
93Inventor score
Filing activity: Jun 18, 1974 → Mar 20, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6282320A | Video data decoding apparatus and method and video signal reproduction apparatus and method | Electricity | 137 | Expired |
| US5793539A | Optical system for endoscopes | Physics | 107 | Expired |
| US5993037A | Light source device for endoscopes | Human Necessities | 88 | Expired |
| US6139175A | Light source for endoscopes, having different numerical-aperture light collection system | Physics | 86 | Expired |
| US5995136A | Frame sequential type imaging apparatus for obtaining high resolution object image by irradiating frame sequential light on the object, photoelectrically converting the object image and processing signals by a solid state imaging device | Electricity | 83 | Expired |
| US6918872B2 | Capsule endoscope | Human Necessities | 76 | Expired |
| US4856495A | Endoscope apparatus | Human Necessities | 75 | Expired |
| US5608451A | Endoscope apparatus | Electricity | 71 | Expired |
| US6841989B2 | Hall-effect current detector | Electricity | 66 | Expired |
| USRE41807E1 | Capsule endoscope | General | 65 | Active |
| US5430475A | Electronic endoscope apparatus having micro array on photoelectric conversion surface | Human Necessities | 64 | Expired |
| US4916534A | Endoscope | Human Necessities | 60 | Expired |
| US7343032B2 | Method and apparatus for automatic and dynamic vessel detection | Physics | 57 | Active |
| US6855111B2 | Capsule endoscope | Human Necessities | 55 | Expired |
| US4882619A | High resolution image pickup system with color dispersion means | Electricity | 54 | Expired |
| US4802460A | Endoscope illuminating optical system device | Physics | 52 | Expired |
| US7704206B2 | Endoscope that provides selection of each illumination mode of four different illumination modes | Human Necessities | 48 | Expired |
| US5089812A | Liquid-crystal display | Physics | 45 | Expired |
| US5896418A | Data transmission system having a communication control computer for controlling communication between a communication interface module and terminal devices | Performing Operations; Transporting | 45 | Expired |
| USD342575S | Receptacle for blood sample analyzing | General | 43 | Expired |
| US5380772A | Modelling liquid for dental porcelain | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5589465A | Glycolipid derivatives acting as ligands for selectins | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6069651A | Imaging apparatus for endoscopes | Human Necessities | 40 | Expired |
| US6772003B2 | Endoscope apparatus | Physics | 40 | Expired |
| US7022066B2 | Capsule endoscope | Electricity | 39 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.