Kumiko Hatakeyama
18Patents
5h-index
15Co-inventors
55Inventor score
Filing activity: Dec 3, 2004 → Oct 8, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7218879B2 | Image forming apparatus controlling polarity of residual toner and process cartridge for use in the same | Physics | 21 | Expired |
| US7315711B2 | Image forming apparatus, process cartridge and cleaningless system | Physics | 14 | Expired |
| US7734242B2 | Protective layer setting unit, process cartridge, and image forming apparatus using same | Physics | 9 | Active |
| US7991342B2 | Protective material and image forming apparatus using the protective material | Physics | 8 | Active |
| US7583914B2 | Charge member, charge apparatus, process cartridge, and image forming apparatus | Physics | 7 | Active |
| US7986910B2 | Lubricant coater, image bearing unit, and image forming apparatus | Physics | 5 | Active |
| US7826787B2 | Protective-agent applying device, process cartridge, and image forming apparatus | Physics | 4 | Active |
| US7639957B2 | Image forming apparatus including controller to detect condition of image developer | Physics | 3 | Active |
| US8180271B2 | Protective layer setting unit, process cartridge, and image forming apparatus, and method of evaluating protective layer setting unit | Physics | 3 | Active |
| US7499664B2 | Image processing apparatus, process cartridge, and cleaning system with residual toner retaining unit | Physics | 2 | Expired |
| US7738829B2 | Process cartridge including photoconductor pre-coated with protective agent and image forming apparatus using same | Physics | 2 | Active |
| US7979016B2 | Image forming apparatus and protective agent block | Physics | 2 | Active |
| US7693476B2 | Image forming apparatus with protective agent applying unit and process cartridge | Physics | 1 | Active |
| US8374537B2 | Image forming apparatus, protectant applicator and process cartridge | Physics | 1 | Active |
| US8340562B2 | Image forming apparatus, protective agent and process cartridge | Physics | 1 | Active |
| US8509670B2 | Image bearing member to which boron nitride is attached | Physics | 0 | Active |
| US7991327B2 | Image forming apparatus and process cartridge | Physics | 0 | Active |
| US7840152B2 | Image forming apparatus, process cartridge, cleaning system, and image forming apparatus with cleaning system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.