Hiroshi Saitoh
97Patents
25h-index
137Co-inventors
91Inventor score
Filing activity: Jun 7, 1977 → Dec 22, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6112046A | Image forming apparatus having recycling of residual toner | Physics | 83 | Expired |
| US5617191A | Toner conveyor roller and image forming apparatus having the same | Physics | 50 | Expired |
| US5489747A | Developing device for an image forming apparatus | Physics | 50 | Expired |
| US4741286A | Single torch-type plasma spray coating method and apparatus therefor | Chemistry; Metallurgy | 46 | Expired |
| US5826144A | Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller | Physics | 43 | Expired |
| US5126799A | Image recording apparatus having a toner supply tank and a toner recovery tank configured into a unitary, disposable magazine | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5625440A | Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering | Physics | 42 | Expired |
| US4819169A | System and method for calculating movement direction and position of an unmanned vehicle | Physics | 41 | Expired |
| US5697026A | Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships | Physics | 40 | Expired |
| US5689782A | Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers | Physics | 39 | Expired |
| US5243169A | Multiple torch type plasma generation device and method of generating plasma using the same | Electricity | 39 | Expired |
| US7595548B2 | Physical quantity sensor and manufacturing method therefor | Electricity | 38 | Expired |
| US5666625A | Device for electrostatically developing a latent image on an image carrier | Physics | 38 | Expired |
| US5708942A | Developing device for an image forming apparatus | Physics | 37 | Expired |
| US5625441A | Developing device for an image forming apparatus | Physics | 36 | Expired |
| US5486909A | Developing device for an image forming apparatus | Physics | 35 | Expired |
| US5879752A | Method of coating a toner conveyor roller | Physics | 35 | Expired |
| US5768665A | Image forming apparatus with bias control to prevent undesirable toner deposition | Physics | 35 | Expired |
| US5845183A | Developing device for an image forming apparatus | Physics | 32 | Expired |
| US6033818A | Developing device for an image forming apparatus | Physics | 29 | Expired |
| US4377603A | Method and apparatus for electrostatic powder coating | Chemistry; Metallurgy | 27 | Expired |
| US5625438A | Toner, and devices for electrostatically depositing a uniform application thereof | Physics | 27 | Expired |
| US5268720A | Electrophotographic recording apparatus having magazine unit for storing developer | Physics | 26 | Expired |
| US6249661A | Device for supporting an image carrier included in an image forming apparatus | Physics | 26 | Expired |
| US5552870A | Developing device for an image forming apparatus | Physics | 26 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.