Masayuki Ohki
31Patents
15h-index
45Co-inventors
77Inventor score
Filing activity: Dec 3, 1996 → Nov 14, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5952639A | Depositing, withdrawal, balance check, exchange and transfer of electronic money in automatic cash handling machine | Physics | 204 | Expired |
| US6016954A | Card holder-type balance reader | Physics | 146 | Expired |
| US5945652A | Electronic wallet and method for operating the same | Physics | 98 | Expired |
| US6000607A | IC card reader/writer and method of operation thereof | Physics | 79 | Expired |
| USD555185S1 | Video projector | General | 65 | Expired |
| US5895903A | Terminal for portable IC card | Physics | 63 | Expired |
| US5929427A | Portable card reader/writer | Physics | 38 | Expired |
| USD575811S1 | Video projector | General | 32 | Expired |
| USD530343S1 | Housing for a storage device | General | 30 | Expired |
| US6339638B1 | Telephone used for electronic money card transaction and method of operation of the same | Physics | 22 | Expired |
| USD437851S | IC card reader and writer | General | 20 | Expired |
| USD600661S1 | Television receiver | General | 18 | Expired |
| USD585035S1 | Television receiver | General | 17 | Expired |
| USD530341S1 | Housing for a storage device | General | 17 | Expired |
| USD543206S1 | Housing for a storage device | General | 15 | Expired |
| US8313199B2 | Projection display system including lens group and reflecting mirror | Physics | 15 | Active |
| USD627386S1 | Video projector | General | 11 | Expired |
| USD627387S1 | Video projector | General | 11 | Expired |
| USD393835S | Smart card reader/writer | General | 11 | Expired |
| USD423471S | IC card reader and writer | General | 10 | Expired |
| USD446799S | Video camera with digital video disc player | General | 10 | Expired |
| USD393527S | Electronic value automated teller machine | General | 8 | Expired |
| US6016957A | IC card reader/writer and method of operation thereof | Physics | 7 | Expired |
| USD423037S | Electronic value processing device | General | 6 | Expired |
| USD393277S | Electronic value processing device | General | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.