Hiroshi Yamashita
325Patents
28h-index
447Co-inventors
93Inventor score
Filing activity: Oct 1, 1974 → May 3, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5249178A | Routing system capable of effectively processing routing information | Electricity | 168 | Expired |
| US6503676B2 | Toner, external additive therefor and image forming method using the toner | Emerging Cross-Sectional Technologies | 87 | Expired |
| US6360068B1 | Electrophotographic image formation process and apparatus | Physics | 80 | Expired |
| US5341376A | ATM cell format conversion system | Electricity | 79 | Expired |
| US6403275B1 | Electrophotographic toner, and image forming method and apparatus using the toner | Physics | 79 | Expired |
| US4733332A | Illuminating device | Mechanical Engineering; Lighting; Heating | 76 | Expired |
| US5368972A | Method of preparing composite particles comprising adhering wax particles to the surface of resin particles | Physics | 74 | Expired |
| US6660443B2 | Dry toner and image forming method using same | Physics | 68 | Expired |
| US5541031A | Polymer particles and toner for electrophotography using the polymer particles | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6432589B1 | Image formation method, electrophotographic toners, and printed matter | Physics | 61 | Expired |
| US5808693A | Video display apparatus with power saving modes | Electricity | 59 | Expired |
| US6508564B1 | Surface light source device and adjusting method of chromaticity thereof | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6852462B2 | Toner, method of forming the toner, and image forming method and apparatus using the toner | Physics | 49 | Expired |
| US6787280B2 | Electrophotographic toner and method of producing same | Physics | 46 | Expired |
| US6329115A | Toner for use in electrophotography and method of producing the same | Physics | 45 | Expired |
| US6682866B2 | Toner for dry developing | Physics | 45 | Expired |
| US6849369B2 | Toner for developing electrostatic image, method for manufacturing the toner, developer including the toner, container containing the toner, and developing method using the toner | Physics | 42 | Expired |
| US6756175B2 | Method for fixing toner | Physics | 41 | Expired |
| US6846604B2 | Toner and image forming apparatus using the toner | Physics | 40 | Expired |
| US6824945B2 | Electrophotographic toner | Physics | 36 | Expired |
| US4118704A | Electromagnetic wave-absorbing wall | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4146854A | High frequency attenuator using ferrite beads | Electricity | 34 | Expired |
| US4885350A | Method of producing polymer particles having narrow particle size distribution | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6416914B1 | Image formation process and developer used therein | Physics | 32 | Expired |
| US6800412B2 | Toner for dry developing | Physics | 31 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.