Takashi Akiyama
126Patents
16h-index
150Co-inventors
89Inventor score
Filing activity: Sep 13, 1973 → Sep 14, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6646697B1 | Liquid crystal display | Physics | 151 | Expired |
| US6271901A | Liquid crystal display device with two reflective polarizers providing metallic appearance effects | Physics | 140 | Expired |
| US6580479B1 | Timepiece | Physics | 129 | Expired |
| US4064605A | Method for producing non-woven webs | Textiles; Paper | 113 | Expired |
| US9228742B2 | Rich-lean combustion burner and combustion apparatus | Mechanical Engineering; Lighting; Heating | 108 | Active |
| US5729072A | Stator for an electric motor | Electricity | 85 | Expired |
| US7061454B2 | Light emitting diode device | Electricity | 74 | Expired |
| US6577361B1 | Liquid crystal display | Physics | 32 | Expired |
| USD486816S1 | Audio signal amplifier | General | 26 | Expired |
| US6169708A | Timepiece | Physics | 20 | Expired |
| US7301591B2 | Liquid crystal display device wherein the number of light emitting elements activated differs depending on whether display is performed by the first or second liquid crystal panel | Physics | 20 | Expired |
| US7106276B2 | Color display device | Physics | 19 | Expired |
| US8877407B2 | Polymer electrolyte fuel cell and method for producing the same | Emerging Cross-Sectional Technologies | 18 | Active |
| US8418661B2 | Combustion apparatus | Mechanical Engineering; Lighting; Heating | 17 | Active |
| US7002737B1 | Three-dimensional confocal microscope | Physics | 16 | Expired |
| US6292439A | Watch | Physics | 16 | Expired |
| US5861862A | Liquid crystal display device realizing a small size by reducing number on input/output terminals | Physics | 16 | Expired |
| US6746236B2 | Combustion apparatus | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US7670705B2 | Fuel cell system with purifying apparatus | Emerging Cross-Sectional Technologies | 15 | Active |
| US4701372A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7248244B2 | Color display device emitting each color light for different time period | Physics | 14 | Expired |
| USD762182S1 | Light-emitting diode | General | 13 | Active |
| US6274277A | Organic electrolyte battery | Emerging Cross-Sectional Technologies | 13 | Expired |
| USD766196S1 | Light-emitting diode | General | 13 | Active |
| US6937301B2 | Time piece with power generation function | Physics | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.