Kenichi Ishii
77Patents
17h-index
133Co-inventors
87Inventor score
Filing activity: Apr 10, 1979 → Mar 31, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6198924A | Frequency channel selection method for radio communication system | Electricity | 112 | Expired |
| US7783297B2 | Location system | Electricity | 107 | Expired |
| US8922603B2 | Multi-primary color display device | Physics | 81 | Active |
| US6630388B2 | Double-gate field-effect transistor, integrated circuit using the transistor and method of manufacturing the same | Electricity | 79 | Expired |
| US7061055B2 | Double-gate field-effect transistor, integrated circuit using the transistor and method of manufacturing the same | Electricity | 60 | Expired |
| US5887263A | Mobile communication system using two channel assigning schemes | Electricity | 47 | Expired |
| US4439771A | Glass antenna system for an automobile | Electricity | 43 | Expired |
| US6150004A | Antimicrobial laminate and bag, container, and shaped cup using same | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6175739A | Channel selection method of a wireless communication system | Electricity | 40 | Expired |
| US6628639B1 | Wireless network using high and low decision thresholds for selecting and maintaining a channel | Electricity | 35 | Expired |
| US5083134A | Antenna device for an automobile | Electricity | 32 | Expired |
| US8280398B2 | Positioning system, positioning method, and program thereof | Physics | 31 | Active |
| US4260989A | Antenna system for window glass of automobile | Electricity | 30 | Expired |
| US8618767B2 | Charging control apparatus for vehicle and vehicle | Emerging Cross-Sectional Technologies | 21 | Active |
| US4950376A | Method of gas reaction process control | Electricity | 20 | Expired |
| US5719585A | Diversity glass antenna for an automobile | Electricity | 18 | Expired |
| US5898927A | Autonomous channel reuse in cellular mobile communication with subsequent power control | Electricity | 18 | Expired |
| US8198855B2 | Charging cable, charging control device and vehicle charging system | Emerging Cross-Sectional Technologies | 17 | Active |
| US5581264A | Diversity glass antenna for an automobile | Electricity | 17 | Expired |
| US4900396A | Method of forming modified layer and pattern | Electricity | 16 | Expired |
| US8258744B2 | Charging control apparatus for vehicle | Emerging Cross-Sectional Technologies | 16 | Active |
| US6434132B1 | Wireless LAN for reestablishing wireless links between hosts according to monitored desired and undesired signals | Electricity | 16 | Expired |
| US7203762B2 | Communications system, and sending device, in a communication network offering both layer-2 and layer-3 virtual private network services | Electricity | 15 | Expired |
| US5657428A | Dynamic information processing system and method for the same | Physics | 14 | Expired |
| US7684382B2 | Provider network for providing L-2 VPN services and edge router | Electricity | 13 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.