Koichi Sumida
14Patents
4h-index
18Co-inventors
53Inventor score
Filing activity: Apr 15, 1994 → Jul 12, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5430293A | Gas visualizing apparatus and method for detecting gas leakage from tanks or piping | Physics | 111 | Expired |
| US6934141B2 | Power supply device preventing inrush current | Electricity | 8 | Expired |
| US5844124A | Method and apparatus for measuring odorant concentration and oderant adding system | Physics | 6 | Expired |
| US7568055B2 | Data processing apparatus for selecting either a PIO data transfer method or a DMA data transfer method | Electricity | 5 | Active |
| US8035864B2 | Image processing apparatus | Electricity | 2 | Active |
| US7701611B2 | Image processing apparatus | Electricity | 1 | Active |
| US7916344B2 | Image detecting method | Physics | 1 | Active |
| US8045235B2 | Method of adding specific image information and image forming apparatus | Electricity | 1 | Active |
| US8917406B2 | Image reading apparatus for determining whether a document contains a distinguishing pattern | Electricity | 1 | Active |
| US7860303B2 | Image processing apparatus, program, and recording medium | Electricity | 0 | Active |
| US7664104B2 | PPP terminating equipment, network equipment and method of responding to LCP echo requirement | Electricity | 0 | Active |
| US8411307B2 | Image processing device and image forming device | Electricity | 0 | Active |
| US8031700B2 | PPP terminating equipment, network equipment and method of responding to LCP echo requirement | Electricity | 0 | Active |
| US7251244B2 | PPP terminating equipment, network equipment and method of responding to LCP echo requirement | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.