Shigeru Arai
39Patents
10h-index
65Co-inventors
78Inventor score
Filing activity: Oct 8, 1975 → Jan 5, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5392273A | Optical storage drive controller with predetermined light source drive values stored in non-volatile memory | Physics | 96 | Expired |
| US5339247A | Distributed data CAD system | Physics | 31 | Expired |
| US4782474A | Tracking servo system for controllably projecting an optical beam on an optical disk | Physics | 28 | Expired |
| US4899325A | Fine access method and circuit for an optical disk drive using a multi-track jump | Physics | 21 | Expired |
| US4855983A | Apparatus for recording and reading an optical disk, having reduced offset in its tracking error signal | Physics | 19 | Expired |
| US5485560A | Displaying method and system for displaying an object by designating a state of display of the object | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5142520A | System for obtaining optimum focusing position in optical disc system | Physics | 14 | Expired |
| US6466920B1 | Method and system for preventing illegal use of digital contents, processing program thereof, and recording medium for the program | Physics | 13 | Expired |
| US4888752A | Focusing and tracking servo system for controlling the projection of an optical beam on an optical disk | Physics | 11 | Expired |
| US4111810A | Desalination reverse osmotic membranes and their preparation | Chemistry; Metallurgy | 10 | Expired |
| US6069858A | Optical disk apparatus | Physics | 10 | Expired |
| US5649081A | Method and apparatus for pattern data processing | Physics | 9 | Expired |
| US5771217A | Magneto-optical disk apparatus having a ejector arm and magnetic field generating means mounted on a stationary base | Physics | 7 | Expired |
| US4627040A | Optical disk tracking apparatus | Physics | 7 | Expired |
| US8902470B2 | Image processing apparatus, image forming system, image processing method and non-transitory computer readable medium | Electricity | 3 | Active |
| US6292444A | Optical storage device made thinner by substituting electrical means for capabilities of sensors | Physics | 3 | Expired |
| US8151834B2 | Hydrogen compressor system | Emerging Cross-Sectional Technologies | 3 | Active |
| US4092471A | Method for removing unreacted monomers from aqueous dispersions of polymerizate | Chemistry; Metallurgy | 2 | Expired |
| US5978330A | Optical storage device made thinner by substituting electrical means for capabilities of sensors | Physics | 2 | Expired |
| US7973497B2 | Discharge tube lighting apparatus | Electricity | 2 | Active |
| US8385635B2 | Image processing apparatus for performing AM screen processing and FM screen processing, image processing method, computer-readable medium | Electricity | 2 | Active |
| US6014726A | Storage apparatus adapted to interface with a host apparatus for processing two different types of recording media | Physics | 2 | Expired |
| US7563078B2 | Reciprocating compressor | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11048187B1 | Exposure control device, image forming apparatus, and non-transitory computer readable medium | Physics | 1 | Active |
| US9251445B2 | Image processing apparatus, image forming system, image forming apparatus, and image processing method for correcting density of image information | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.