Yukihiro Okada
63Patents
10h-index
98Co-inventors
81Inventor score
Filing activity: Oct 1, 1993 → Jun 18, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6073195A | Bus controllers ensuring reduced power consumption and stable operation | Physics | 30 | Expired |
| US6836045B2 | Electrical motor | Electricity | 22 | Expired |
| US7358008B2 | Electrochemical device including electrolyte | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5621260A | Coreless motor | Electricity | 17 | Expired |
| US6287726A | Method for producing nickel positive electrode for alkaline storage batteries | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5773169A | Active material and positive electrode for alkaline storage battery | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7670705B2 | Fuel cell system with purifying apparatus | Emerging Cross-Sectional Technologies | 15 | Active |
| US7514174B2 | Electrochemical device including electrolyte | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5744259A | Nickel positive electrode for alkaline storage battery and sealed nickel-metal hydride storage battery | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7081317B2 | Polymer electrolyte thin film fuel cell and method of operating the same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5673152A | Optical pickup comprising a heat-insulating material | Physics | 10 | Expired |
| US7604887B2 | Electrolyte membrane, membrane electrode assembly using this and fuel cell | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7259754B2 | Pen sensor coordinate narrowing method and apparatus | Physics | 7 | Expired |
| US6417583B1 | Linear actuator with movable magnets | Electricity | 6 | Expired |
| US8389173B2 | Method for activating fuel cell | Emerging Cross-Sectional Technologies | 5 | Active |
| US8323826B2 | Sealed secondary battery | Emerging Cross-Sectional Technologies | 5 | Active |
| US7438990B2 | Electrochemical device including electrolyte | Emerging Cross-Sectional Technologies | 5 | Active |
| US8105711B2 | Nonaqueous electrolyte secondary battery | Emerging Cross-Sectional Technologies | 5 | Active |
| US6144188A | Method for detecting fully charged condition of secondary battery and detector using the same | Electricity | 5 | Expired |
| US6790558B2 | Electrode alloy powder and method of producing the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6562516B2 | Nickel positive electrode for alkaline storage batteries | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9911972B2 | Non-aqueous electrolyte secondary battery and method for manufacturing negative electrode for secondary battery | Emerging Cross-Sectional Technologies | 4 | Active |
| US7498097B2 | Fuel cell and production method thereof | Emerging Cross-Sectional Technologies | 4 | Active |
| US6066416A | Nickel hydroxide positive electrode active material having a surface layer containing a solid solution nickel hydroxide with manganese incorporated therein | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7582371B2 | Fuel cell system having fuel and water controlling means | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.