Takemasa Yasukawa
21Patents
13h-index
36Co-inventors
81Inventor score
Filing activity: Mar 31, 1983 → Sep 22, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4658463A | Wiper blade | Performing Operations; Transporting | 166 | Expired |
| US5949346A | Light-driven display device | Physics | 117 | Expired |
| US6680490B2 | Light-emitting device | Electricity | 59 | Expired |
| US6729746B2 | Light source device | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6445011B1 | Light-emitting diode | Electricity | 52 | Expired |
| US5815072A | Vehicle display device | Physics | 48 | Expired |
| US7227190B2 | White light emitting device | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6953265B2 | Light source device | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5741058A | LED display device | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6774405B2 | Light-emitting device | Electricity | 33 | Expired |
| US5085005A | Weather strip for motor vehicle | Performing Operations; Transporting | 30 | Expired |
| US6831305B2 | Semiconductor light-emitting device | Electricity | 23 | Expired |
| US4622712A | Wiper blade rubber | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4638525A | Wiper blade rubber | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6713877B2 | Light-emitting diode | Electricity | 11 | Expired |
| US5489461A | Rubber layered structure and manufacturing process therefor | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6730942B2 | Light emitting apparatus | Electricity | 10 | Expired |
| US4716618A | Wiper blade rubber | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4669144A | Wiper blade | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4912803A | Wiper blade rubber | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5690768A | Manufacturing process of rubber layered structure | Emerging Cross-Sectional Technologies | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.