Yoshio Umeda
27Patents
7h-index
55Co-inventors
72Inventor score
Filing activity: Apr 26, 1988 → Aug 13, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5903538A | Automatic disk change apparatus and disk tray for the apparatus | Physics | 44 | Expired |
| US5844394A | Stepping motor controller | Electricity | 22 | Expired |
| US8466869B2 | Display apparatus that controls a length of an emission period or luminance of a display area according to temperature of a liquid crystal panel | Physics | 16 | Active |
| US6466385B1 | Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral track | Physics | 13 | Expired |
| US4843766A | Cutting tool having concentrically arranged outside and inside abrasive grain layers and method for production thereof | Performing Operations; Transporting | 13 | Expired |
| US6496323B1 | Information recording/reproducing apparatus and method | Physics | 12 | Expired |
| US5634179A | Charging device and image forming apparatus containing the charging device | Physics | 8 | Expired |
| US5831947A | Automatic medium changing apparatus using an automatic regulator according to the disk type | Physics | 7 | Expired |
| US4817341A | Cutting tool having concentrically arranged outside and inside abrasive grain layers and method for production thereof | Performing Operations; Transporting | 7 | Expired |
| US8917296B2 | Luminous intensity distribution system and stereoscopic image display device | Physics | 6 | Active |
| US5548380A | Charging device and an image forming apparatus using a charging device | Physics | 4 | Expired |
| US5776544A | Charging device and an image forming apparatus using a charging device | Physics | 3 | Expired |
| US7098939B2 | Image display device and method for displaying thumbnail based on three-dimensional image data | Electricity | 2 | Expired |
| US9210752B2 | Backlight device | Physics | 1 | Active |
| US9649723B2 | Processing apparatus including laser beam applying mechanism and separating means | Performing Operations; Transporting | 1 | Active |
| US8581941B2 | Backlight device and display apparatus | Electricity | 1 | Active |
| US8866395B2 | Display apparatus using a backlight | Electricity | 0 | Active |
| US9019325B2 | Liquid crystal display device | Physics | 0 | Active |
| US9201246B2 | Controller, display device, eyeglass device and video system for controlling an eyeglass device based on an environmental factor | Electricity | 0 | Active |
| US9426456B2 | Display device and video viewing system | Physics | 0 | Active |
| US9024923B2 | Liquid crystal display panel and liquid crystal display device with backlight chromaticity balance | Electricity | 0 | Active |
| US9472145B2 | Liquid crystal display device including an opening in a color filter | Physics | 0 | Active |
| US9588424B2 | Photosensitive resin composition for screen printing, photosensitive film, and screen plate | Emerging Cross-Sectional Technologies | 0 | Active |
| US9390662B2 | Liquid crystal display device | Physics | 0 | Active |
| US8917222B2 | Display device and video viewing system | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.