Tetsuya Numata
63Patents
7h-index
45Co-inventors
68Inventor score
Filing activity: Aug 20, 2009 → Jul 26, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8521060B2 | Cartridge with a protecting member and a sealing member for sealing a developer supply opening | Physics | 37 | Active |
| USD863419S1 | Flange coupling for process cartridge for image forming apparatus | General | 34 | Active |
| US8670688B2 | Developing cartridge and process cartridge with grip portion of sealing member preventing mounting of cartridge | Physics | 27 | Active |
| US8270879B2 | Electrophotographic image forming apparatus | Physics | 27 | Active |
| USD845384S1 | Process cartridge for image forming apparatus | General | 16 | Active |
| US8483589B2 | Developing device, developing cartridge, process cartridge and image forming apparatus | Physics | 13 | Active |
| US9417604B2 | Image forming apparatus | Physics | 11 | Active |
| US9471031B2 | Image forming apparatus with separate support members for removable cartridges | Physics | 7 | Active |
| US9442457B2 | Image forming apparatus with removable process units | Physics | 7 | Active |
| US8768211B2 | Developing cartridge having a detachable cover | Physics | 5 | Active |
| US8478161B2 | Electrophotographic image forming apparatus with locking member for spacing components of the apparatus and preventing movement of components of the apparatus | Physics | 5 | Active |
| US11112753B2 | Cartridge with a sheet to remove matter from a surface of a photosensitive drum | Physics | 4 | Active |
| US8472838B2 | Electrophotographic image forming apparatus with spacing member for spacing components of the apparatus | Physics | 4 | Active |
| US9026001B2 | Image bearing member unit and image forming apparatus | Physics | 4 | Active |
| US8417152B2 | Process cartridge and image forming apparatus | Physics | 3 | Active |
| US11435689B2 | Cartridge | Physics | 3 | Active |
| US11294299B2 | Cartridge used in image forming apparatus | Physics | 2 | Active |
| USD889415S1 | Process cartridge for image forming apparatus | General | 2 | Active |
| USD862585S1 | Side cover for process cartridge for image forming apparatus | General | 2 | Active |
| US9377752B2 | Image forming apparatus with image bearing member protection | Physics | 2 | Active |
| USD862586S1 | Photosensitive drum for process cartridge for image forming apparatus | General | 2 | Active |
| US11709438B2 | Cartridge used in image forming apparatus | Physics | 2 | Active |
| US10606210B2 | Development device, process cartridge, and image forming apparatus | Physics | 1 | Active |
| US11762326B2 | Cartridge | Physics | 1 | Active |
| US9146526B2 | Unit, cleaning unit, process cartridge, and image forming apparatus | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.