Fumio Ogata
22Patents
13h-index
35Co-inventors
81Inventor score
Filing activity: Mar 24, 1976 → Jul 4, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6298208A | Toner container for an image forming apparatus | Physics | 81 | Expired |
| US6104900A | Image forming apparatus having an improved developer-supplying mechanism and method thereof | Physics | 54 | Expired |
| US6678492B1 | Toner container and toner delivery apparatus | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6336020B1 | Image forming apparatus having an improved developer-supplying mechanism and method thereof | Physics | 49 | Expired |
| US7184691B2 | Toner container, toner supply device and image forming apparatus | Physics | 45 | Expired |
| US4835567A | Paper re-feeding apparatus of image forming apparatus | Physics | 39 | Expired |
| US6608983B2 | Toner container and air stream delivering mechanism | Emerging Cross-Sectional Technologies | 36 | Expired |
| US7577379B2 | Toner container, toner supply device and image forming apparatus | Physics | 26 | Active |
| US6549744B2 | Powder container for an image forming apparatus and powder discharging device | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6648218B2 | Powder container, method of assembling the same and image forming apparatus | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4084221A | High-voltage thyristor converter | Electricity | 20 | Expired |
| US7962069B2 | Toner container, image forming apparatus, method of recycling toner container | Physics | 19 | Active |
| US7039346B2 | Flexible toner container and toner delivery apparatus | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7149462B2 | Container, toner container, image forming apparatus, and image forming process | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7505718B2 | Container, toner container, image forming apparatus, and image forming process | Emerging Cross-Sectional Technologies | 11 | Active |
| US4100434A | Gate controlling apparatus for a thyristor valve | Electricity | 9 | Expired |
| US6343576B1 | Overhead camshaft V-2 engine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4286211A | Direct current detecting device using saturable reactors | Physics | 6 | Expired |
| US7277665B2 | Toner container configured for toner replenishment through blow system | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6837475B2 | Valve-operating device for engine | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US8068770B2 | Toner cartridge, image forming apparatus, method of recycling toner cartridge | Physics | 1 | Active |
| US12104093B2 | Adhesive agent and adhesive tape using said adhesive agent | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.