Takeo Arai
76Patents
12h-index
103Co-inventors
87Inventor score
Filing activity: Sep 27, 1977 → Jan 14, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7244021B2 | Image recording device | Performing Operations; Transporting | 41 | Expired |
| US7663714B2 | Backlight device and color liquid crystal display apparatus | Physics | 38 | Active |
| US4712517A | Cylinder block structure for multicylinder internal combustion engines | Emerging Cross-Sectional Technologies | 33 | Expired |
| US8272771B2 | Backlight device, light source device, lens, electronic apparatus and light guide plate | Physics | 30 | Active |
| US5407239A | Vehicle bumper beam and method of fabricating the same | Performing Operations; Transporting | 28 | Expired |
| US4216682A | Fiber-reinforced light alloy cast article | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6902249B2 | Inkjet printer | Performing Operations; Transporting | 24 | Expired |
| US4318438A | Method for casting a fiber-reinforced composite article | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4683844A | Cylinder block and head assembly for internal combustion engines | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5240822A | Packed photographic solid processing agents | Physics | 18 | Expired |
| US5180473A | Paper-making process | Textiles; Paper | 17 | Expired |
| US4279289A | Process for preparation of fiber-reinforced magnesium alloy materials | Performing Operations; Transporting | 16 | Expired |
| US5030546A | Processing method of light-sensitive silver halide photographic material | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5374498A | Silver halide photographic light-sensitive material | Physics | 12 | Expired |
| US4952960A | Drying air control method in an automatic developing machine and an automatic developing machine employing the method | Physics | 12 | Expired |
| US7344291B2 | Illuminating device and backlight device employing the illuminating device | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4686943A | Closed-deck cylinder block for water-cooled internal combustion engines | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4702204A | Lubrication oil passage arrangement for water-cooled internal combustion engines | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4266596A | Method of producing a unidirectional fiber-reinforced composite material | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5068681A | Drying air control method in an automatic developing machine and an automatic developing machine employing the method | Physics | 9 | Expired |
| US6013410A | Silver halide photographic light-sensitive material | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5330885A | Silver halide photographic light-sensitive material | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4506721A | Method for production of fiber-reinforced composite material | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4681068A | Blow-by gas processing arrangement for automotive internal combustion engines | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7510314B2 | Backlight device | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.