Yoshiaki Nagao
52Patents
11h-index
77Co-inventors
81Inventor score
Filing activity: Sep 24, 1982 → Jun 17, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4927278A | Tape cassette and tape printer for use therewith | Performing Operations; Transporting | 167 | Expired |
| US5188469A | Tape feed cassette with tape cutter and guide | Performing Operations; Transporting | 161 | Expired |
| US4966476A | Tape printer | Performing Operations; Transporting | 136 | Expired |
| US5419648A | Tape feed mechanism having ribbon inked surface directed toward ribbon spool | Performing Operations; Transporting | 129 | Expired |
| US5277503A | Tape cassette built into a tape writer | Performing Operations; Transporting | 121 | Expired |
| US5991570A | Image forming apparatus having a protection unit to protect a sensitive image forming element which is exposed when an open/close member is open | Physics | 43 | Expired |
| US5526777A | Air inlet apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4450933A | Suction silencer | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5333959A | Printing device including a cassette accommodation chamber for accommodating cassettes of different thicknesses | Performing Operations; Transporting | 15 | Expired |
| US4626951A | Singular housing of switch and protective semiconductor | Electricity | 12 | Expired |
| US6697600B2 | Cover plate, image scanning device and image forming apparatus | Electricity | 12 | Expired |
| US5651249A | Exhaust muffler structure for internal combustion engine | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5685654A | Printing tape cassette with separated recording medium and ink ribbon | Performing Operations; Transporting | 10 | Expired |
| US7700876B2 | External device and electronic apparatus | Electricity | 9 | Expired |
| US7102739B2 | Method for selection of optical fiber and system for inspection of optical fiber | Physics | 9 | Expired |
| US6943872B2 | Method for selection of optical fiber and system for inspection of optical fiber | Physics | 8 | Expired |
| US5372105A | Combustion chamber for two-cycle internal combustion engine | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5447129A | Intake insulator | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6819896B2 | Image reading apparatus with wire twist preventing structure and imaging apparatus using the same | Electricity | 7 | Expired |
| US5471960A | Cylinder for two-cycle internal combustion engine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5211153A | Two-cycle internal combustion gasoline engine cylinder | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6925970B2 | Air-cooled four-stroke internal combustion engine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4599978A | Reed valve | Emerging Cross-Sectional Technologies | 5 | Expired |
| US10268015B2 | Optical fiber cable having a plurality of stranded optical fiber ribbons | Physics | 4 | Active |
| US10488609B2 | Intermittent-connection-type optical fiber ribbon and optical cable | Physics | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.