Nobuo Nakajima
45Patents
16h-index
37Co-inventors
81Inventor score
Filing activity: Jun 1, 1978 → Jan 10, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7242893B2 | Developer supply container | Physics | 91 | Expired |
| US7738817B2 | Developer supply container and image forming apparatus | Physics | 53 | Expired |
| US7412192B2 | Developer supply container | Physics | 51 | Active |
| US7266330B2 | Developer supply container with shutter movement prevention feature | Physics | 39 | Expired |
| US7369798B2 | Developer supply container and image forming apparatus | Physics | 37 | Active |
| US5487083A | Hand-off method and mobile station for spread spectrum mobile communication | Electricity | 35 | Expired |
| US7450890B2 | Developer supply container having a shutter cleaning feature | Physics | 28 | Expired |
| US9720349B2 | Developer supply kit, developer supplying device and image forming apparatus | Physics | 28 | Active |
| US7738818B2 | Developer supply container | Physics | 27 | Active |
| US10088773B2 | Developer supply kit, developer supplying device and image forming apparatus | Physics | 26 | Active |
| US9529299B2 | Developer supply container and developer supplying apparatus | Physics | 23 | Active |
| US8649711B2 | Developer supply container | Physics | 20 | Active |
| US7957679B2 | Developer supply container | Physics | 20 | Active |
| US6978107B2 | Developer supply container | Physics | 17 | Expired |
| USD477357S1 | Toner supplying cartridge for photocopier | General | 16 | Expired |
| US7483660B2 | Developer supply container | Physics | 16 | Expired |
| US9229364B2 | Developer supply container and developer supplying system | Physics | 15 | Active |
| US6969846B2 | Light source unit and scanning optical apparatus using the same | Electricity | 14 | Expired |
| US7742724B2 | Developer supply container and image forming apparatus | Physics | 13 | Expired |
| US5018463A | Stacking device having clamps along a circulating conveyor for clamping, conveying, and stacking sewn articles from a sewing machine to a cloth holding stand | Textiles; Paper | 11 | Expired |
| USD615124S1 | Toner supplying cartridge | General | 11 | Expired |
| USD538333S1 | Toner supplying cartridge | General | 10 | Expired |
| USD529947S1 | Toner supplying cartridge | General | 8 | Expired |
| US4185257A | Quasioptical band rejection filter | Electricity | 7 | Expired |
| US7764909B2 | Developer supply container | Physics | 7 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.