Haruo Iimura
31Patents
12h-index
25Co-inventors
81Inventor score
Filing activity: Sep 1, 1987 → Dec 23, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5016988A | Liquid crystal display device with a birefringent compensator | Physics | 137 | Expired |
| US5250214A | Liquid crystal color display device provided with a color filter film and an optical phase plate comprising liquid crystal polymer | Physics | 72 | Expired |
| US5380459A | Liquid crystal display device with improved viewing angle dependence of color | Physics | 43 | Expired |
| US4984873A | Liquid crystal display device | Physics | 43 | Expired |
| US5175638A | ECB type liquid crystal display device having birefringent layer with equal refractive indexes in the thickness and plane directions | Physics | 33 | Expired |
| US5056896A | Liquid crystal display device with dielectric anisotropy | Physics | 28 | Expired |
| US5150237A | Liquid crystal display element | Physics | 28 | Expired |
| US5184237A | Super-twisted nematic type liquid crystal display device | Physics | 26 | Expired |
| US5472635A | Phase plate and liquid crystal display using same | Physics | 25 | Expired |
| US5243451A | DAP type liquid crystal device with cholesteric liquid crystal birefringent layer | Physics | 22 | Expired |
| US6284424A | Electrophotographic toner and image forming method and apparatus using the toner | Physics | 20 | Expired |
| US4818074A | Projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom | Physics | 18 | Expired |
| US5595852A | Organosilicon compound, producing method thereof and toner and dry-type developer using the same | Physics | 12 | Expired |
| US7662530B2 | Image forming apparatus and image forming method | Physics | 11 | Active |
| US8045875B2 | Image forming apparatus and image forming method capable of generating stable transfer electric field | Physics | 8 | Active |
| US8781348B2 | Transfer device and image forming apparatus incorporating same | Physics | 8 | Active |
| US8165481B2 | Image forming method and apparatus that detect an image density | Physics | 6 | Active |
| US8923716B2 | Transfer device, image forming apparatus, and transfer method | Physics | 5 | Active |
| US8712267B2 | Image forming apparatus and image forming method | Physics | 5 | Active |
| US8909079B2 | Image forming apparatus | Physics | 5 | Active |
| US8750736B2 | Image forming apparatus for obtaining good image quality over time | Physics | 4 | Active |
| US8818221B2 | Transfer device and image forming apparatus | Physics | 3 | Active |
| US9310722B2 | Image forming apparatus and image forming method | Physics | 2 | Active |
| US9081335B2 | Transfer device with transfer voltage unit and image forming apparatus using the same | Physics | 2 | Active |
| US9020382B2 | Image forming apparatus | Physics | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.