Hitoshi Ota
106Patents
8h-index
67Co-inventors
83Inventor score
Filing activity: Aug 19, 1993 → Jul 29, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6094293A | Optical switching apparatus for use in an optical communication system | Physics | 86 | Expired |
| US6916862B2 | Process for the preparation of pigment dispersion, pigment dispersion obtained by the same, ink jet recording ink comprising the same, and recording method and recorded material using the same | Chemistry; Metallurgy | 52 | Expired |
| US6498222B1 | Water resistance imparter, ink composition, reactive fluid, and method of ink-jet recording with two fluids | Performing Operations; Transporting | 28 | Expired |
| US6723784B2 | Coating liquid, and image recording method and recording using same | Performing Operations; Transporting | 18 | Expired |
| US8089476B2 | Liquid crystal device | Physics | 17 | Active |
| US5486338A | Metal catalyst carrier for exhaust gas purification | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US10403701B2 | Electro-optical device and electronic apparatus | Electricity | 11 | Active |
| US6664008B1 | Secondary battery having nonaqueous electrolyte solution | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6599356B2 | Method for manufacturing pigment dispersed liquid, and pigment dispersed liquid, and ink for ink-jet printer recording using said pigment dispersed liquid | Chemistry; Metallurgy | 7 | Expired |
| US10777130B2 | Organic electroluminescent device and electronic apparatus | Physics | 5 | Active |
| US8553023B2 | Electro-optical device and electronic apparatus | Physics | 5 | Active |
| US10007120B2 | Display device with different positional relationships between emitting elements and filters | Physics | 5 | Active |
| US5411610A | High-strength stainless steel foil for corrugating and process for producing the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9634079B2 | Organic electroluminescent device and electronic apparatus | Electricity | 4 | Active |
| US11132950B2 | Electro-optical device and electronic apparatus | Electricity | 4 | Active |
| US10332450B2 | Electro-optical device, electronic apparatus, and method of driving electro-optical device | Physics | 4 | Active |
| US7686417B2 | Maintenance liquid for ink jet recording | Performing Operations; Transporting | 4 | Active |
| US7060781B2 | 2,6-dimethyphenol composition | Chemistry; Metallurgy | 4 | Expired |
| US7810920B2 | Ink jet recording apparatus and ink jet recording method | Performing Operations; Transporting | 3 | Active |
| US10152919B2 | Electro-optical device, electronic apparatus, and method of driving electro-optical device | Physics | 3 | Active |
| US10247948B2 | Display device with at least two emitting elements and two filters, and different positional relationships | Physics | 3 | Active |
| US5342500A | Interfacial component detection apparatus | Physics | 3 | Expired |
| US11048086B2 | Display device with at least two emitting elements and two filters, and different positional relationships | Physics | 3 | Active |
| US10134822B2 | Electro-optical device and electronic apparatus | Electricity | 2 | Active |
| US9164601B2 | Electro-optical device and electronic apparatus | Physics | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.