Oki Electric Co., Ltd.
16Patents
0Active
16Granted
34Portfolio score
Filing activity: Aug 4, 1977 → Mar 26, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5693139A | Growth of doped semiconductor monolayers | Electricity | 183 | Expired |
| US5126688A | Power amplifying apparatus for wireless transmitter | Electricity | 85 | Expired |
| US6131038A | Method of and apparatus for selecting a channel in a base station by determining the field intensity of radiowaves received | Electricity | 38 | Expired |
| US4922736A | Key device incorporating an electronic circuit | Emerging Cross-Sectional Technologies | 36 | Expired |
| USD252752S | Telephone set | General | 16 | Expired |
| US5200763A | Printer with an LED print head having means for setting data about the print head | Physics | 13 | Expired |
| US5260616A | Permanent magnet type stepping motor | Electricity | 11 | Expired |
| US5781466A | Semiconductor memory with built-in cache | Physics | 10 | Expired |
| US4899309A | Current sense circuit for a ROM system | Physics | 9 | Expired |
| US4929102A | Ribbon protector including electro-conductive elements and platen gap adjustment device incorporating the same | Performing Operations; Transporting | 8 | Expired |
| US4672612A | Error correction system in a teletext system | Electricity | 7 | Expired |
| US4663736A | File deletion system in a file unit | Physics | 6 | Expired |
| US5923994A | Selective oxidation process | Electricity | 5 | Expired |
| US4660163A | Adaptive digital filter | Electricity | 4 | Expired |
| US7046301B2 | Vertical synchronous signal detection circuit | Electricity | 1 | Expired |
| US6005941A | Method and apparatus for providing optional service functions in a private branch exchange | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.