Takesuke Maruyama
36Patents
12h-index
58Co-inventors
84Inventor score
Filing activity: Apr 7, 1977 → Jul 18, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5491525A | Illumination unit for liquid crystal projection display apparatus and liquid crystal display apparatus having it used | Electricity | 49 | Expired |
| US4920420A | Automatic focusing system | Electricity | 37 | Expired |
| US6290360A | Liquid crystal projector, and projection lens unit, optical unit and cooling system for the same | Physics | 32 | Expired |
| US4941719A | Light scanning system | Physics | 32 | Expired |
| US4246560A | Self-converging deflection yoke | Electricity | 18 | Expired |
| US6462794B1 | Image forming unit, enlarging unit, optical parts, and image display apparatus having these components | Electricity | 18 | Expired |
| US5748238A | Video camera | Electricity | 17 | Expired |
| US4740676A | Range finding automatic focusing system employing a rotatable transparent plate and a half-split light receiving element | Physics | 14 | Expired |
| US5455694A | Liquid crystal display with pixel shape same as image of light source through microlens | Electricity | 14 | Expired |
| US6201645A | Array lens, lighting optical system, optical unit and imaging apparatus | Electricity | 13 | Expired |
| US4557567A | Lens system with plastic lenses compensating for temperature changes | Physics | 13 | Expired |
| US5684548A | Liquid crystal display element and micro-lens arrangement and a display using the same | Electricity | 12 | Expired |
| US6411440B1 | Array lens, lighting optical system, optical unit and imaging apparatus | Electricity | 12 | Expired |
| US6678096B2 | Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same | Physics | 11 | Expired |
| US4842387A | Automatic focusing apparatus for use in video camera and the like | Physics | 10 | Expired |
| US7414796B2 | Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same | Physics | 9 | Active |
| US6783245B2 | Liquid crystal projector, and projection lens unit, optical unit and cooling system for the same | Physics | 9 | Expired |
| US5565919A | Video camera/VTR and camera station with opto-electronic link between camera/VTR and camera station | Electricity | 8 | Expired |
| US6307601A | Projection type liquid crystal display device | Electricity | 7 | Expired |
| US5048939A | Zoom lens system | Physics | 7 | Expired |
| US6392809B2 | Array lens, lighting optical system, optical unit and imaging apparatus | Electricity | 6 | Expired |
| US4096462A | Deflection yoke device for use in color television receiver sets | Electricity | 5 | Expired |
| US4782356A | Automatic focusing apparatus | Physics | 4 | Expired |
| US6351295B2 | Projection type liquid crystal display device | Electricity | 4 | Expired |
| US6824273B2 | Liquid crystal projector, and projection lens unit, optical unit and cooling system for the same | Physics | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.