Tomoko Utsumi
18Patents
10h-index
35Co-inventors
68Inventor score
Filing activity: Jan 20, 2004 → Sep 27, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7318989B2 | Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method | Physics | 49 | Active |
| US7374851B2 | Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method | Physics | 45 | Expired |
| US7261989B2 | Toner for developing electrostatic images, developer, image forming method, and image forming apparatus | Physics | 30 | Expired |
| US7172844B2 | Toner for electrophotography, and image forming process, process cartridge and image forming apparatus using the same | Physics | 22 | Expired |
| US7258959B2 | Toner for electrophotography and image forming apparatus | Physics | 21 | Expired |
| US7169525B2 | Toner, developer, image forming apparatus, process cartridge and image forming process | Physics | 20 | Expired |
| US7759036B2 | Toner and production method thereof, image forming apparatus and image forming method, and process cartridge | Physics | 14 | Active |
| US7521164B2 | Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method | Physics | 12 | Active |
| US7522857B2 | Toner, image forming apparatus using the same and process cartridge | Physics | 12 | Active |
| US7368212B2 | Toner for developing electrostatic image, developer, image forming apparatus, process for forming image, process cartridge and process for measuring porosity of toner | Physics | 11 | Expired |
| US7071617B2 | Light-emitting apparatus and method for forming the same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7442484B2 | Image forming method using toner | Physics | 8 | Expired |
| US7288353B2 | Toner, developer, image developer and image forming apparatus | Physics | 7 | Expired |
| US7566521B2 | Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method | Physics | 7 | Active |
| US7642032B2 | Toner, developer, image forming apparatus and image forming method | Physics | 3 | Expired |
| US7749674B2 | Toner, developer, image developer and image forming apparatus | Physics | 2 | Active |
| US7122958B2 | Light-emitting apparatus and method for forming the same | Emerging Cross-Sectional Technologies | 1 | Expired |
| US11677836B2 | Server apparatus, communication system and communication method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.