Osamu Sato
226Patents
29h-index
288Co-inventors
93Inventor score
Filing activity: Feb 3, 1981 → Mar 26, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6243638A | Electronic transmission control system for automotive vehicle with continuously variable automatic transmission | Mechanical Engineering; Lighting; Heating | 193 | Expired |
| US5619239A | Replaceable ink tank | Performing Operations; Transporting | 117 | Expired |
| US6361136B1 | Detection system, liquid-jet printing apparatus and liquid container | Performing Operations; Transporting | 85 | Expired |
| US5657539A | Process for producing an ink jet recording head | Emerging Cross-Sectional Technologies | 80 | Expired |
| US6330870A | Variable valve timing control system | Emerging Cross-Sectional Technologies | 80 | Expired |
| US6338552B1 | Ink refilling method and apparatus, ink container refilled therewith and ink jet apparatus comprising ink refilling apparatus | Performing Operations; Transporting | 63 | Expired |
| US4841322A | Camera having interchangeable lenses | Physics | 57 | Expired |
| US4339079A | Fragrance emitter | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6293662A | Ink tank coupling method, ink jet recording apparatus, and ink tank | Performing Operations; Transporting | 50 | Expired |
| US6058984A | Method for filling liquid into liquid container with liquid chamber, and liquid filling apparatus | Performing Operations; Transporting | 45 | Expired |
| US6505586B1 | Variable valve timing control apparatus and method for engines | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6257703A | Ink jet recording head | Performing Operations; Transporting | 41 | Expired |
| US7686423B2 | Liquid discharge head and manufacturing method thereof | Performing Operations; Transporting | 40 | Active |
| US4945376A | Camera having interchangeable lenses | Physics | 40 | Expired |
| US6116722A | Ink jet ink refilling method and apparatus | Performing Operations; Transporting | 39 | Expired |
| US6145972A | Container for liquid to be ejected | Performing Operations; Transporting | 39 | Expired |
| US6243116A | Ink container, installing-removing method therefore and apparatus usable with the same | Performing Operations; Transporting | 39 | Expired |
| US6718135B2 | Flash photography system | Physics | 38 | Expired |
| US6155545A | Cylindrical shock absorber with cover | Performing Operations; Transporting | 37 | Expired |
| US5712667A | Means for and method of detecting the state of ink remain in a cartridge having containing portions differing in ink containing state | Performing Operations; Transporting | 37 | Expired |
| US5567373A | Method and apparatus for manufacturing a liquid container having plural porous members | Performing Operations; Transporting | 36 | Expired |
| US5870983A | Valve timing regulation apparatus for engine | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US4686690A | Synchronous data receiver circuit | Electricity | 35 | Expired |
| US6405694B2 | Variable valve timing control device for internal combustion engine | Emerging Cross-Sectional Technologies | 34 | Expired |
| US7281372B2 | Hydraulic controller and hydraulic drive unit provided with said hydraulic controller | Mechanical Engineering; Lighting; Heating | 33 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.