Seijiro Ishimaru
23Patents
4h-index
36Co-inventors
63Inventor score
Filing activity: Jul 24, 1991 → Sep 5, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5750301A | Toner for a two-component type developer | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5500319A | Toner for a two-component-type magnetic developing agent having excellent spent resistance | Physics | 5 | Expired |
| US5514509A | Electrophotographic developer | Physics | 4 | Expired |
| US6544707B2 | Two component developing agent and an image forming apparatus by use of the same | Physics | 4 | Expired |
| US6803165B2 | Toner for electrophotography, developing agent for electrophotography using the toner, image forming method, and image forming device | Physics | 3 | Expired |
| US6967070B2 | Electrophotographic toner and image forming method | Physics | 2 | Expired |
| US6746808B2 | Image forming color toner, color image forming method and color image forming apparatus | Physics | 2 | Expired |
| US5376489A | Two-component developer | Physics | 2 | Expired |
| US6821696B2 | Toner for optical fixing, manufacturing method therefor and image formation apparatus using it | Physics | 1 | Expired |
| US6468705B2 | Optical fixing toner | Physics | 1 | Expired |
| US10353310B2 | Electrostatic-image developing toner, electrostatic image developer, and toner cartridge | Physics | 1 | Active |
| US5232807A | Electrophotographic developer | Emerging Cross-Sectional Technologies | 1 | Expired |
| US6727030B2 | Toner and an image formation method | Physics | 1 | Expired |
| US7252914B2 | Toner for electrophotography and developer for electrophotography using the same, process cartridge, apparatus for forming image, and method for forming image | Physics | 1 | Expired |
| US5240804A | Electrophotographic developer comprising resin coated carrier | Physics | 0 | Expired |
| US5580691A | Toner for a two-component type developer | Emerging Cross-Sectional Technologies | 0 | Expired |
| US8383308B2 | Positively chargeable two-component developer, image forming method, and image forming apparatus | Physics | 0 | Active |
| US5521045A | Toner for a two-component-type magnetic developing agent having excellent spent resistance | Emerging Cross-Sectional Technologies | 0 | Expired |
| US9874827B2 | Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge | Physics | 0 | Active |
| US5223367A | Start developer | Physics | 0 | Expired |
| US10488772B2 | Electrostatic-image developing toner, electrostatic image developer, and toner cartridge | Physics | 0 | Active |
| US9915886B2 | Image forming apparatus, electrostatic charge image developer, and electrostatic charge image developing toner | Physics | 0 | Active |
| US6833228B2 | Toner and an image formation method | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.