Chikara Tsutsui
31Patents
8h-index
30Co-inventors
71Inventor score
Filing activity: Jul 22, 1994 → Sep 7, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6022661A | Toner for developing electrostatic latent image | Physics | 28 | Expired |
| US5981132A | Non-magnetic mono-component developer | Physics | 18 | Expired |
| US6100000A | Developer comprising toner and/or carrier having specified average degree of roundness and specified standard deviation of degree of roundness | Physics | 12 | Expired |
| US6335138B1 | Production method of toner | Physics | 12 | Expired |
| US6524762B2 | Mono-component developing device, toner for the same and image forming apparatus | Physics | 11 | Expired |
| US5660964A | Developer containing two kinds of wax | Physics | 11 | Expired |
| US5665512A | Mono-component toner for developing an electrostatic latent image and developing method | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6063537A | Non-magnetic toner for developing electrostatic latent image | Physics | 10 | Expired |
| US5905011A | Nonmagnetic monocomponent negatively chargeable color developer | Physics | 8 | Expired |
| US5905010A | Nonmagnetic toner for forming full color images | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5862444A | Developing roller having another coating of fine particles | Physics | 8 | Expired |
| US6174641A | Non-magnetic toner for developing electrostatic latent image | Physics | 7 | Expired |
| US6159647A | Non-magnetic yellow toner | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6063535A | Mono-component developing method | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8170451B2 | Developing apparatus including guide for preventing packing and leaking of developer and image forming apparatus provided with the same | Physics | 3 | Active |
| US7018761B2 | Toner and image forming method | Physics | 3 | Expired |
| US5840460A | Toner for developing electrostatic latent images | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5958641A | Single component toner comprising specified polyester | Physics | 3 | Expired |
| US6899985B2 | Toner for developing electrostatic latent image | Physics | 3 | Expired |
| US6265125A | Toner set and full-color image-forming method suitable for use of the toner set | Physics | 3 | Expired |
| US8285164B2 | Developing device, and controlling method thereof | Physics | 2 | Active |
| US7835676B2 | Developing apparatus image forming apparatus, and method of charging a developer using charging particles | Physics | 2 | Active |
| US6066430A | Mono-component developing method and mono-component developing machine for effectuating the method | Physics | 2 | Expired |
| US6459874B2 | Developing system for forming a full-color image | Physics | 2 | Expired |
| US8190064B2 | Developing apparatus with agitating portion and image forming apparatus provided with the same | Physics | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.