Masaki Hirota
52Patents
14h-index
63Co-inventors
87Inventor score
Filing activity: Jun 21, 1984 → Nov 30, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6233339A | Physical property based cryptographics | Emerging Cross-Sectional Technologies | 91 | Expired |
| US7098812B2 | Operator identifying device | Physics | 70 | Expired |
| US5995262A | Signal transmission bus and signal processing apparatus | Electricity | 58 | Expired |
| US6366375B1 | Optical-signal transmission apparatus and method, and signal processing apparatus | Electricity | 38 | Expired |
| US5168463A | Shift register apparatus for storing data therein | Physics | 35 | Expired |
| US5543672A | Rotation detecting device with magnet brake | Physics | 30 | Expired |
| US5822475A | Optical bus and signal processor | Physics | 29 | Expired |
| US4752569A | Sialylated Lewis.sup.x epitope, antibodies and diagnosis | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7983190B2 | Network system, layer 3 communication device, layer 2 communication device, and route selection method | Electricity | 20 | Active |
| US6567484B1 | Burst synchronizing circuit | Electricity | 18 | Expired |
| US7687774B2 | Infrared ray sensing element and method of producing the same | Electricity | 18 | Active |
| US5406104A | MOSFET circuit with separate and common electrodes | Electricity | 16 | Expired |
| US6634812B2 | Optical bus system and signal processor | Electricity | 16 | Expired |
| US7770738B2 | Classifying device and method of classification | Physics | 15 | Active |
| US5027251A | MOSFET including current mirror FET therein | Electricity | 13 | Expired |
| US7993934B2 | Reaction method using a microreactor, and a microreactor | Emerging Cross-Sectional Technologies | 13 | Active |
| US6065881A | Optical transmission line forming method and apparatus, and optical circuit | Physics | 12 | Expired |
| US8582467B2 | Method for preventing control packet looping and bridge apparatus using the method | Electricity | 10 | Active |
| US6949286B2 | Radiation-absorbing layers for thermopile radiation detectors | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5987198A | Optical bus and optical bus production method including a plurality of light transmission paths | Physics | 9 | Expired |
| US8679336B2 | Microchannel device, separation apparatus, and separation method | Emerging Cross-Sectional Technologies | 9 | Active |
| US6781128B2 | Infrared radiation detecting device | Physics | 9 | Expired |
| US6317242A | Optical bus system and signal processor | Electricity | 7 | Expired |
| US4820978A | Magnetic rotation sensor wherein a magnetic member is attached to a rotation shaft by a heat resistant elastic member | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6590280B2 | Disk-like gettering unit, integrated circuit, encapsulated semiconductor device, and method for manufacturing the same | Electricity | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.