Hiroshi Kageyama
102Patents
16h-index
104Co-inventors
89Inventor score
Filing activity: Aug 20, 1979 → Oct 7, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6876345B2 | Image display | Physics | 59 | Expired |
| US6727875B1 | High-definition liquid crystal display including sub scan circuit which separately controls plural pixels connected to the same main scan wiring line and the same sub scan wiring line | Physics | 28 | Expired |
| US5121165A | Developer unit and a toner hopper for an image forming device | Physics | 27 | Expired |
| US6392625B1 | Liquid crystal display apparatus having level conversion circuit | Physics | 27 | Expired |
| US4672184A | Bar code reader system | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7277072B2 | Image display | Physics | 27 | Expired |
| US7142180B2 | Image display | Physics | 25 | Expired |
| US5561512A | Fixation control device | Physics | 22 | Expired |
| US5023748A | Corona wire cleaning device for a corona unit | Physics | 20 | Expired |
| US8031144B2 | Image display | Physics | 19 | Active |
| US5054375A | Piston for internal combustion engine | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US10017395B2 | Ammonia synthesis catalyst and ammonia synthesis method | Emerging Cross-Sectional Technologies | 18 | Active |
| US6166786A | Semiconductor element with N channel and P region connected only to the channel and liquid crystal display device using the same | Electricity | 17 | Expired |
| US6559906B1 | Liquid crystal display device having gate electrode with two conducting layers, one used for self-aligned formation of the TFT semiconductor regions | Physics | 17 | Expired |
| US6433768B1 | Liquid crystal display device having a gray-scale voltage producing circuit | Physics | 16 | Expired |
| US6825826B1 | Liquid crystal display apparatus | Physics | 16 | Expired |
| US6522317B1 | Liquid-crystal display apparatus incorporating drive circuit in single integrated assembly | Physics | 15 | Expired |
| US8380124B2 | Communication system by electrostatic coupling and electromagnetic induction | Electricity | 14 | Active |
| US4659929A | Radiographic system including a transport system having two independent portions for serial continuous transporting of image plates | Physics | 12 | Expired |
| US7221343B2 | Image display apparatus | Physics | 12 | Expired |
| US5195478A | Piston for an internal combustion engine | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4891875A | Method for manufacturing a piston for an internal combustion engine | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8633878B2 | Image display | Physics | 10 | Active |
| US8159427B2 | Image display | Physics | 10 | Active |
| US7012586B2 | Image display device | Physics | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.