Manabu Nonaka
84Patents
8h-index
54Co-inventors
81Inventor score
Filing activity: Jul 6, 1999 → Apr 20, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6617733B1 | Magnetic bearing apparatus and vacuum pump having magnetic bearing apparatus | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US7515866B2 | Image forming apparatus | Physics | 13 | Active |
| US6499942B1 | Turbomolecular pump and vacuum apparatus | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US7635123B2 | Image forming apparatus, image forming method, and bypass sheet supplier capable of regulating and supplying recording medium | Performing Operations; Transporting | 9 | Active |
| US6779969B2 | Vacuum pump | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6948710B2 | Method and apparatus for sheet feeding and image forming apparatus incorporating the same | Performing Operations; Transporting | 9 | Expired |
| US6755611B1 | Vacuum pump | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7572096B2 | Vacuum pump | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US7418235B2 | Method and apparatus for image forming | Physics | 8 | Active |
| US6910850B2 | Vacuum pump | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6832888B2 | Molecular pump for forming a vacuum | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6672827B2 | Vacuum pump | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7506948B2 | Image formation apparatus | Performing Operations; Transporting | 6 | Active |
| US9856099B2 | Sheet feeder and image forming apparatus incorporating the sheet feeder | Physics | 6 | Active |
| US7758044B2 | Image forming apparatus, sheet conveying device, and sheet conveying method | Physics | 6 | Active |
| US8480073B1 | Sheet feeder and image forming apparatus incorporating same | Performing Operations; Transporting | 5 | Active |
| US6290457A | Vacuum pump | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7962082B2 | Fixing device, image forming apparatus, and fixing method having an expanding/contracting contacting member | Physics | 5 | Active |
| US6851848B2 | Turbo-molecular pump having radiation temperature apparatus | Physics | 5 | Expired |
| US6419444B1 | Screw groove type vacuum pump, complex vacuum pump and vacuum pump system | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7611138B2 | Paper feeder and image forming apparatus using the same | Performing Operations; Transporting | 4 | Active |
| US7505714B2 | Image forming device | Electricity | 4 | Active |
| US8157257B2 | Sheet feeding device and electrophotographic image forming apparatus with rotating charged belt | Physics | 4 | Active |
| US6454524B1 | Vacuum pump and vacuum apparatus | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US8342507B2 | Sheet conveying device and image forming apparatus | Performing Operations; Transporting | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.