Yoshinori Okada
77Patents
11h-index
117Co-inventors
81Inventor score
Filing activity: Oct 3, 1974 → Aug 25, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5251074A | Method and apparatus for controlling a video signal print system | Physics | 32 | Expired |
| US4825299A | Magnetic recording/reproducing apparatus utilizing phase comparator | Electricity | 31 | Expired |
| US4591924A | Multiplex magnetic recording and reproduction system | Physics | 27 | Expired |
| US4607293A | Magnetic recording and reproduction system | Electricity | 23 | Expired |
| US4338645A | Tape running time indication system | Physics | 18 | Expired |
| US4724407A | Integrated filter circuit having switchable selected parallel filter paths | Electricity | 16 | Expired |
| US8743048B2 | Electrochromic display element, display device and information apparatus | Physics | 14 | Active |
| US8937758B2 | Electrochromic display device | Physics | 12 | Active |
| US8687262B2 | Ion conductor and electrochromic display device | Physics | 12 | Active |
| US6627960B2 | Semiconductor data storage apparatus | Emerging Cross-Sectional Technologies | 12 | Expired |
| US9304368B2 | Electrochromic device and production method thereof | Emerging Cross-Sectional Technologies | 12 | Active |
| US8902151B2 | Controllable electrochromic display device | Physics | 11 | Active |
| US8736941B2 | Electrochromic display apparatus and method of manufacturing the same | Emerging Cross-Sectional Technologies | 10 | Active |
| US5432648A | Magnetic recording and reproducing unit with selection of reproduced image signals | Physics | 10 | Expired |
| US9069222B2 | Electrochromic display element and display device | Emerging Cross-Sectional Technologies | 9 | Active |
| US9829762B2 | Electrochromic display element, display device, information system, and electrochromic dimming lens | Physics | 8 | Active |
| US5625504A | Magnetic recording and reproducing system | Electricity | 8 | Expired |
| US6347182B1 | Recording/reproducing apparatus including search reproducer controlled by tracking controller so that picture information of a selected type can be normally detected during search reproduction | Electricity | 7 | Expired |
| US4667120A | Integrated filter circuit with variable frequency characteristics | Electricity | 6 | Expired |
| US9041997B2 | Electro-chromic display element, display apparatus, and driving method | Physics | 6 | Active |
| US9500926B2 | Electrochromic display element and image display device | Physics | 6 | Active |
| US5557564A | Signal terminal structure for macro cells and an associated connection method | Physics | 6 | Expired |
| US7084839B2 | Pre-drive circuit, capacitive load drive circuit and plasma display apparatus | Physics | 5 | Expired |
| US9688706B2 | Electrochromic compound, electrochromic composition, display element, and dimming element | Chemistry; Metallurgy | 4 | Active |
| US6621234B2 | Plasma display device with alternately arranged sustain electrodes | Electricity | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.