Keisuke Okada
48Patents
9h-index
71Co-inventors
78Inventor score
Filing activity: Mar 31, 1983 → May 22, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5258094A | Method for producing multilayer printed wiring boards | Emerging Cross-Sectional Technologies | 246 | Expired |
| US4982354A | Digital finite impulse response filter and method | Electricity | 68 | Expired |
| US5263243A | Method for producing multilayer printed wiring boards | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4799009A | Semiconductor testing device | Electricity | 33 | Expired |
| US5220723A | Process for preparing multi-layer printed wiring board | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5099171A | Cathode-ray tube panel having thin conductive film | Electricity | 22 | Expired |
| US4654690A | Capacitive elements with reduced stray capacitance | Electricity | 20 | Expired |
| US7151879B2 | Optical fiber ribbon that is easily branched into individual optical fibers and optical fiber cable using the same | Physics | 13 | Expired |
| US5377142A | Semiconductor memory having data preset function | Physics | 11 | Expired |
| US5379410A | Data generating apparatus generating consecutive data and having a data skip scheme and a method of operating the same | Physics | 7 | Expired |
| US9116321B2 | Optical fiber cord | Emerging Cross-Sectional Technologies | 6 | Active |
| US7260697B2 | Data storage device and method of erasing data stored in the data storage device | Physics | 6 | Expired |
| US5257174A | Engine-driven power generating system with over-current protection and stator teeth with grooves on a top surface | Electricity | 6 | Expired |
| US5146479A | Up/down counter for counting binary data stored in flip flops | Physics | 4 | Expired |
| US7731429B2 | Optical connector and method of attaching optical fiber cord to optical connector | Physics | 4 | Active |
| US10488609B2 | Intermittent-connection-type optical fiber ribbon and optical cable | Physics | 4 | Active |
| US10378195B2 | Flush toilet | Fixed Constructions | 4 | Active |
| US10268015B2 | Optical fiber cable having a plurality of stranded optical fiber ribbons | Physics | 4 | Active |
| US10268009B2 | Optical fiber cable | Physics | 3 | Active |
| US4896284A | Semiconductor integrated circuit for multiplying analog and digital values | Electricity | 3 | Expired |
| US4866443A | A/D converter having multiplication function | Electricity | 3 | Expired |
| US4918453A | A/D converter having multiplication function | Electricity | 2 | Expired |
| US4903027A | A/D converter comprising encoder portion having function of multiplying analogue input by digital input | Electricity | 2 | Expired |
| USD927376S1 | Shift knob for automobile | General | 2 | Active |
| US10514517B2 | Optical fiber cable | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.