Ryoichi Ishii
15Patents
5h-index
26Co-inventors
66Inventor score
Filing activity: Dec 7, 1976 → Aug 17, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8334520B2 | Charged particle beam apparatus | Electricity | 51 | Active |
| US5870926A | Infrared moisture measuring apparatus and infrared moisture measuring method | Physics | 17 | Expired |
| US7875858B2 | Charged particle beam trajectory corrector and charged particle beam apparatus | Electricity | 9 | Active |
| US4096757A | Method and apparatus for examining weld defects in vertical pipes by supersonic waves | Physics | 8 | Expired |
| US5883460A | Support unit for ultrasonic vibration resonator | Performing Operations; Transporting | 8 | Expired |
| US6098514A | Ultrasonic vibration cutter | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6250188A | Ultrasonic vibration cutting method and apparatus | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5884833A | Ultrasonic vibration soldering apparatus and resonator used therein | Performing Operations; Transporting | 4 | Expired |
| US7365323B2 | Environmental scanning electron microcope | Electricity | 3 | Active |
| US8933422B2 | Charged particle beam device | Electricity | 2 | Active |
| US8201722B2 | Resonator for joining metal members together utilizing ultrasonic vibration | Electricity | 2 | Active |
| US10052713B2 | Bonding method and bonded structure | Chemistry; Metallurgy | 2 | Active |
| US7854247B2 | Ultrasonic vibration bonding resonator | Performing Operations; Transporting | 1 | Active |
| US4211118A | Ultrasonic fault detector | Physics | 1 | Expired |
| US7838834B2 | Image forming method and electron microscope | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.