Kenichi Takanashi
32Patents
14h-index
26Co-inventors
81Inventor score
Filing activity: Jan 24, 1986 → Apr 17, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6400391B1 | Optical scanning lens, optical scanning device and image forming apparatus | Emerging Cross-Sectional Technologies | 82 | Expired |
| US6185026A | Multi-beam scanning apparatus | Physics | 71 | Expired |
| US5355244A | Optical scanner for reducing shading | Physics | 46 | Expired |
| US5459601A | Optical scanner for reducing shading | Physics | 43 | Expired |
| US6233081A | Optical scanning device, image forming apparatus and optical scanning method | Physics | 41 | Expired |
| US6317246A | Multi-beam scanning apparatus | Physics | 41 | Expired |
| US4756584A | Scanning optical system with irregular deflecting surface correction | Physics | 28 | Expired |
| US6839157B2 | Method and apparatus for multi-beam optical scanning capable of effectively adjusting a scanning line pitch | Electricity | 27 | Expired |
| US6657761B2 | Optical scanning device, image forming apparatus, and optical scanning method | Electricity | 26 | Expired |
| US4971411A | Optical scanning system | Physics | 23 | Expired |
| US4779964A | Zoom lens with a mechanism for moving a first lens so as to be compactly housed | Physics | 21 | Expired |
| US4932734A | Optical scanning system using a laser diode array | Physics | 20 | Expired |
| US6744545B2 | Optical scanning lens, optical scanning device and image forming apparatus | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5161047A | Optical scanner for image recording apparatus | Physics | 19 | Expired |
| US4707085A | F.theta. lens for use in light beam scanner | Physics | 14 | Expired |
| US6856438B2 | Optical scanning lens and apparatus capable of effectively generating accurately-pitched light spots, and image forming apparatus using the same | Physics | 14 | Expired |
| US6833940B2 | Method and apparatus for optical scanning capable of performing a high speed and high pixel density scanning | Physics | 14 | Expired |
| US4836630A | Optical scanning system having a surface inclination correction function | Physics | 13 | Expired |
| US4863227A | Light scanning device | Physics | 12 | Expired |
| US6870652B2 | Optical scanning lens, optical scanning device and image forming apparatus | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5029956A | Optical scanner | Physics | 12 | Expired |
| US4962982A | Light beam scanning device and light beam scanning lens | Physics | 11 | Expired |
| US5757532A | Optical scanner | Physics | 11 | Expired |
| US5771115A | Optical scanner | Physics | 10 | Expired |
| US4846539A | F.theta. lens system for use in light scanning device | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.