Yasuhiro Ishii
38Patents
11h-index
80Co-inventors
78Inventor score
Filing activity: Dec 20, 1976 → Mar 12, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5235641A | File encryption method and file cryptographic system | Physics | 199 | Expired |
| US5144665A | Cryptographic communication method and system | Electricity | 76 | Expired |
| US5058201A | Mobile telecommunications system using distributed miniature zones | Electricity | 60 | Expired |
| US5225994A | Control and supervisory system for power distribution equipment | Emerging Cross-Sectional Technologies | 59 | Expired |
| US6148415A | Backup switching control system and method | Physics | 49 | Expired |
| US6049221A | Semiconductor integrated circuit system having function of automatically adjusting output resistance value | Electricity | 36 | Expired |
| US6011791A | Multi-processor system and its network | Physics | 30 | Expired |
| USD423986S | Pull tab for a slide fastener slider | General | 17 | Expired |
| US6728258B1 | Multi-processor system and its network | Physics | 15 | Expired |
| US5678062A | Input/output control method and data processor | Physics | 15 | Expired |
| US4308094A | Diaphragm for speaker and method of producing same | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6705176B2 | Electric power steering apparatus | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6197111A | Heat shield assembly for crystal puller | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6458202B1 | Process for preparing single crystal silicon having uniform thermal history | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4428996A | Diaphragm for speaker | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD403271S | Pull tab for slide fastener sliders | General | 9 | Expired |
| US4958094A | Emitter follower circuit with MOSFET | Electricity | 9 | Expired |
| US5602545A | Priority encoder | Physics | 8 | Expired |
| US4129195A | Diaphragm for speaker | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8336412B1 | Electric power steering apparatus | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6684312B1 | Memory managing method used in adding memory and information processing apparatus | Physics | 5 | Expired |
| US5420817A | Semiconductor integrated circuit device comprising memory area in which structurally different memory cells are included | Physics | 5 | Expired |
| US5363364A | Audio data recording/reproducing apparatus having digital high-speed dubbing function | Physics | 4 | Expired |
| US8141413B2 | Particulate matter concentration measuring apparatus | Emerging Cross-Sectional Technologies | 4 | Active |
| US8779320B2 | Resistance welding method, resistance welder, and method and device for evaluating resistance welding | Performing Operations; Transporting | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.