Nobuyuki Takagi
26Patents
9h-index
65Co-inventors
78Inventor score
Filing activity: Sep 10, 1980 → Mar 24, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4383170A | Image input device | Electricity | 127 | Expired |
| US4737869A | Magnetic disk having data area and index servo area and servo system for positioning read/write head on magnetic disk | Physics | 30 | Expired |
| US6238151A | Drilling tool and throw-away tip for use in drilling work | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5829927A | Drill and throwaway tip | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4964009A | Magnetic disk having an index area and a limited number of radially extending servo sections | Physics | 15 | Expired |
| US8828900B2 | Exhaust gas purification catalyst | Emerging Cross-Sectional Technologies | 12 | Active |
| US4360919A | Semiconductor light emitting device | Electricity | 12 | Expired |
| US8105561B2 | Catalyst for purification of exhaust gas, regeneration method for the catalyst, and apparatus and method for purification of exhaust gas using the catalyst | Emerging Cross-Sectional Technologies | 11 | Active |
| US4675710A | Light emitting semiconductor device | Electricity | 10 | Expired |
| US5343604A | Combined working machine | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4896240A | Magnetic disk having an index area and a limited number of radially extending servo sections | Physics | 8 | Expired |
| US6522366B1 | Dual-loop PLL circuit and chrominance demodulation circuit | Electricity | 6 | Expired |
| US8389435B2 | Metal oxide catalyst carrier particle and exhaust gas purification catalyst | Emerging Cross-Sectional Technologies | 3 | Active |
| US8601794B2 | Apparatus and method for regenerating catalyst for purifying exhaust gas | Emerging Cross-Sectional Technologies | 1 | Active |
| US8522534B2 | Exhaust purification device of internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US11759769B2 | Exhaust gas purification device | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US8225601B2 | Exhaust gas purification system for internal combustion engine | Emerging Cross-Sectional Technologies | 0 | Active |
| US11643958B2 | Exhaust gas purification material and exhaust gas purification device | Emerging Cross-Sectional Technologies | 0 | Active |
| US8263791B2 | Method and reagent for protein analysis | Chemistry; Metallurgy | 0 | Active |
| US10625246B2 | Oxygen storage material and method for producing the same | Emerging Cross-Sectional Technologies | 0 | Active |
| US11559786B2 | Oxygen storage material and method for producing the same | Emerging Cross-Sectional Technologies | 0 | Active |
| US12214334B2 | Supported catalyst particles | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11821349B2 | Exhaust gas purification catalyst | Emerging Cross-Sectional Technologies | 0 | Active |
| US9481812B2 | Polishing agent, polishing method and additive liquid for polishing | Electricity | 0 | Active |
| US10668449B2 | Oxygen storage material and method for producing the same | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.