Jun Azuma
62Patents
11h-index
64Co-inventors
81Inventor score
Filing activity: Dec 21, 1982 → Mar 25, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6084622A | Frame structure and an image forming apparatus using such a frame structure | Physics | 90 | Expired |
| US4833502A | Image forming apparatus having an image bearing member reciprocally movable in the direction of the rotational axis thereof | Physics | 71 | Expired |
| US6035159A | Process cartridge with axially shiftable drive coupling | Physics | 71 | Expired |
| US5634178A | Gear unit, image forming apparatus and gear unit mounting method | Physics | 50 | Expired |
| US5559581A | Image forming apparatus with helical gear drive train | Physics | 43 | Expired |
| US5561496A | Image forming apparatus, assembling method of image forming apparatus, and mounting method of outer casing | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5907745A | Image forming apparatus having arrangement of sheet support members and air ducts | Physics | 24 | Expired |
| US5708922A | Guide means and electrophotographic image forming apparatus | Physics | 18 | Expired |
| US5621451A | Image forming apparatus | Physics | 17 | Expired |
| US4977412A | Optical scanning device | Physics | 12 | Expired |
| US4907017A | Laser optical apparatus | Performing Operations; Transporting | 12 | Expired |
| US5351264A | Optical apparatus for emitting light and automatic adjustment apparatus therefor | Physics | 11 | Expired |
| US6593047B2 | Single-layer type electrophotosensitive material | Physics | 9 | Expired |
| US5479201A | Optical beam scanner with circuit board mounted elements | Electricity | 8 | Expired |
| US5900961A | Scanning optical device | Performing Operations; Transporting | 4 | Expired |
| US9133227B2 | Production methods for solubilized lignin, saccharide raw material and monosaccharide raw material, and solubilized lignin | Textiles; Paper | 3 | Active |
| US10359713B2 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Physics | 3 | Active |
| US10191397B2 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Physics | 3 | Active |
| US10295918B2 | Electrophotographic photosensitive member, process cartridge, and image forming apparatus | Physics | 3 | Active |
| US6573017B2 | Single-layer type electrophotosensitive material | Physics | 3 | Expired |
| US7029811B2 | Electrophotographic photoreceptor | Physics | 3 | Expired |
| US4565830A | Method of ameliorating the subjective symptoms and objective signs in congestive heart failure | Human Necessities | 2 | Expired |
| US6879794B2 | Image forming apparatus | Physics | 2 | Expired |
| US7855286B2 | Titanyl phthalocyanin crystal, method for preparing the same and electrophotographic photoconductor | Physics | 2 | Active |
| US6858368B2 | Electrophotographic photoreceptor and image forming device | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.