Tsugio Okamoto
43Patents
11h-index
33Co-inventors
75Inventor score
Filing activity: Oct 15, 1979 → Oct 7, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6775706B1 | Multi-protocol switching system, line interface and multi-protocol processing device | Electricity | 75 | Expired |
| US6744426B1 | Pen coordinate reading device with pen attribute detecting function | Physics | 54 | Expired |
| USD438258S | Electronic display board | General | 31 | Expired |
| US6950433B1 | Address converter for gateways interconnecting networks of different address formats | Electricity | 29 | Expired |
| US6618760B1 | Forwarding information retrieval technique | Electricity | 23 | Expired |
| US4810614A | Method of recording information on photosensitive and pressure-sensitive sheet utilizing mask original form | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6886907B1 | Cleaning device for cleaning printhead of ink-jet printer | Performing Operations; Transporting | 20 | Expired |
| US6964476B2 | Ink-jet recording apparatus | Performing Operations; Transporting | 18 | Expired |
| USD450767S | Cartridge pen for electronic display board | General | 16 | Expired |
| US6866361B2 | Ink-jet recording apparatus and maintenance method of ink-jet head included in ink-jet recording apparatus | Performing Operations; Transporting | 14 | Expired |
| US6916080B2 | Cleaning device for cleaning printhead of ink-jet printer | Performing Operations; Transporting | 11 | Expired |
| US7496317B2 | Image-forming device facilitating resolution of paper jam | Physics | 9 | Active |
| US7128389B2 | Inkjet printer | Performing Operations; Transporting | 8 | Expired |
| US7021756B2 | Inkjet printer | Performing Operations; Transporting | 8 | Expired |
| US5008700A | Color image recording apparatus using intermediate image sheet | Physics | 8 | Expired |
| US4600325A | Printing apparatus | Performing Operations; Transporting | 7 | Expired |
| US4920374A | Picture recording apparatus | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7529505B2 | Restricting unit for restricting a supporter of developers in an image forming apparatus | Physics | 5 | Active |
| US4864353A | Image recording apparatus | Physics | 5 | Expired |
| US4647238A | Printer with a control for feeding disposable ribbon with minimum waste length | Performing Operations; Transporting | 4 | Expired |
| US7354134B2 | Inkjet recording apparatus | Performing Operations; Transporting | 4 | Expired |
| US8224229B2 | Image forming apparatus | Physics | 4 | Active |
| US7784928B2 | Printer | Performing Operations; Transporting | 4 | Active |
| US7252363B2 | Inkjet printer | Performing Operations; Transporting | 4 | Expired |
| US7931265B2 | Sheet feeder and image forming device provided with the same | Emerging Cross-Sectional Technologies | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.