Yujiro Ando
43Patents
13h-index
39Co-inventors
81Inventor score
Filing activity: May 14, 1974 → Feb 28, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4491855A | Image recording method and apparatus | Physics | 99 | Expired |
| US4682858A | Liquid crystal device having reduced-pressure region in communication with ferroelectric liquid crystal | Physics | 65 | Expired |
| US4478510A | Cleaning device for modulation control means | Performing Operations; Transporting | 65 | Expired |
| US4831394A | Electrode assembly and image recording apparatus using same | Physics | 43 | Expired |
| US3936184A | Electrophotographic copying machine | Physics | 26 | Expired |
| US4692779A | Image forming method and apparatus therefor | Physics | 22 | Expired |
| US4682880A | Multicolor image recording method and device utilizing a single image transfer to the recording material | Physics | 21 | Expired |
| US4046466A | Method and apparatus for electrophotography | Physics | 18 | Expired |
| US4177757A | Magnetic brush developing device for developing electrostatic latent images | Physics | 18 | Expired |
| US4712878A | Color image forming apparatus comprising ferroelectric smectic liquid crystal having at least two stable states | Physics | 17 | Expired |
| US4050802A | Electrophotographic copying machine | Physics | 15 | Expired |
| US4658275A | Image forming apparatus | Physics | 14 | Expired |
| US4739348A | Recording head assembly using magnetic toner and image forming apparatus using the same | Physics | 14 | Expired |
| US4766468A | Developing method and apparatus for a photocopier | Physics | 12 | Expired |
| US3976484A | Screen electrophotographic process | Physics | 12 | Expired |
| US5214480A | Image forming apparatus with transfer sheet bearing means | Physics | 11 | Expired |
| US4105444A | Air flow method of cleaning ion modulation photosensitive screen during corona charging | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4358681A | Corona discharger | Physics | 9 | Expired |
| US4168974A | Ion modulation imaging involves prior uniform charging of secondary recording surface and charge control thereof | Physics | 9 | Expired |
| US4989021A | Cleaning device for conductive magnetic toner and image recording apparatus using same | Physics | 8 | Expired |
| US4502061A | Image forming apparatus | Physics | 8 | Expired |
| US4386837A | Corona discharging device | Physics | 6 | Expired |
| US4284697A | Image formation method | Physics | 6 | Expired |
| US4691213A | Ion generating device and method of manufacturing same | Performing Operations; Transporting | 6 | Expired |
| US6760051B2 | Image forming apparatus with switching elements | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.