Keiichi Kubota
169Patents
12h-index
125Co-inventors
89Inventor score
Filing activity: Aug 20, 1979 → May 30, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4751509A | Light valve for use in a color display unit with a diffraction grating assembly included in the valve | Physics | 88 | Expired |
| US5532856A | Planar optical mesh-connected tree interconnect network | Electricity | 63 | Expired |
| US4699498A | Image projector with liquid crystal light shutter | Physics | 25 | Expired |
| US6626282B1 | Transfer system | Performing Operations; Transporting | 18 | Expired |
| US10028129B2 | Techniques for mobility mode selection in uplink-based and downlink-based mobility | Electricity | 16 | Active |
| US5028969A | Semiconductor device for a space modulation matrix and method for driving a space modulation matrix | Physics | 14 | Expired |
| US4595260A | Liquid crystal projection display with even temperature elevation | Physics | 14 | Expired |
| US4470669A | Liquid crystal display device | Physics | 13 | Expired |
| US4779235A | Parallel operation optical processor unit | Physics | 13 | Expired |
| US10687263B2 | Enhanced make-before-break handover | Electricity | 12 | Active |
| US8593990B1 | Measurement reporting | Emerging Cross-Sectional Technologies | 12 | Active |
| US10200920B2 | On-demand system information | Emerging Cross-Sectional Technologies | 12 | Active |
| US7154926B2 | Laser diode module, laser apparatus and laser processing apparatus | Electricity | 12 | Expired |
| US5063531A | Optical neural net trainable in rapid time | Physics | 10 | Expired |
| US10219259B2 | Uplink-based cell selection | Electricity | 8 | Active |
| US8509437B2 | Radio communication system, radio communication apparatus, and ciphering method | Electricity | 8 | Active |
| US4270149A | Laser beam facsimile apparatus | Electricity | 8 | Expired |
| US10616822B2 | System information updating | Electricity | 8 | Active |
| US9131412B2 | Signaling radio bearer security handling for single radio voice call continuity operation | Electricity | 8 | Active |
| US7768962B2 | HSUPA HARQ process flushing | Electricity | 7 | Active |
| US10237889B2 | Conditional uplink grant | Emerging Cross-Sectional Technologies | 7 | Active |
| US8437754B2 | Apparatus, computer programs and methods for enabling filtering of neighbor cells or frequencies | Electricity | 6 | Active |
| US8432864B1 | Methods and apparatuses for overriding common enhanced dedicated channel resource selection | Electricity | 6 | Active |
| US10177891B2 | Method and apparatus for non-adjacent carrier signaling in a multicarrier broadband wireless system | Electricity | 6 | Active |
| US8837311B2 | Method and apparatus for reselecting a different transmission time interval resource | Electricity | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.