Junichi Okamura
31Patents
10h-index
9Co-inventors
68Inventor score
Filing activity: Dec 26, 1991 → Jan 12, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5287312A | Dynamic random access memory | Physics | 33 | Expired |
| US6140805A | Source follower NMOS voltage regulator with PMOS switching element | Physics | 26 | Expired |
| US7584434B2 | System and method of displaying map image | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5619472A | Semiconductor memory device with a plurality of bonding pads arranged in an array | Physics | 21 | Expired |
| US5740120A | Semiconductor memory having improved data bus arrangement | Physics | 15 | Expired |
| US6181618A | Dynamic type RAM | Physics | 14 | Expired |
| US7158441B2 | Semiconductor integrated circuit | Electricity | 14 | Expired |
| US6477079B2 | Voltage generator for semiconductor device | Physics | 14 | Expired |
| US5528542A | Sense amplifier | Physics | 13 | Expired |
| US8423165B2 | Digital/analogue conversion apparatus | Electricity | 13 | Active |
| US7043202B2 | Frequency modulator apparatus of phase selection type, and frequency synthesizer of phase selection type | Electricity | 9 | Expired |
| US5684321A | Semiconductor device having an input protection circuit | Electricity | 7 | Expired |
| US6532167B2 | Voltage generator for semiconductor device | Physics | 7 | Expired |
| US5894442A | Semiconductor memory device equipped with an equalizing control circuit having a function of latching an equalizing signal | Physics | 7 | Expired |
| US6911850B2 | Semiconductor integrated circuit | Electricity | 6 | Expired |
| US5929492A | Contact structure of column gate and data line | Physics | 6 | Expired |
| US5673229A | Dynamic random access memory | Physics | 6 | Expired |
| US5666319A | Sense amplifier | Physics | 6 | Expired |
| US5812478A | Semiconductor memory having improved data bus arrangement | Physics | 5 | Expired |
| US6864734B2 | Semiconductor integrated circuit | Electricity | 5 | Expired |
| US5625599A | Semiconductor memory having decoded sense amplifier drive lines | Physics | 5 | Expired |
| US9276540B2 | Digital/analogue conversion apparatus | Electricity | 4 | Active |
| US6101148A | Dynamic random access memory | Physics | 4 | Expired |
| US6381186B1 | Dynamic random access memory | Physics | 4 | Expired |
| US7129795B2 | Semiconductor integrated circuit with wiring arrangement for N-stage amplifying | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.