Ryosuke Hirokawa
27Patents
3h-index
24Co-inventors
59Inventor score
Filing activity: Dec 20, 2007 → Jun 27, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US10137690B2 | Ink jet recording apparatus and ink jet recording method | Performing Operations; Transporting | 5 | Active |
| US10696050B2 | Ink jet printing apparatus and ink jet printing method | Performing Operations; Transporting | 3 | Active |
| US10384474B2 | Inkjet recording apparatus and inkjet recording method | Performing Operations; Transporting | 3 | Active |
| US7887051B2 | Stack alignment device, sheet discharge device and image forming apparatus | Performing Operations; Transporting | 3 | Active |
| US10569531B2 | Transfer type ink jet recording method with cooled transfer body | Performing Operations; Transporting | 2 | Active |
| US10071567B2 | Ink jet recording method and ink jet recording apparatus | Performing Operations; Transporting | 2 | Active |
| US10654300B2 | Liquid ejection apparatus with liquid in pressure chamber in liquid ejection head being circulated between pressure chamber and outside | Performing Operations; Transporting | 2 | Active |
| US10239330B2 | Ink jet recording apparatus and ink jet recording method | Performing Operations; Transporting | 2 | Active |
| US10543679B2 | Ink jet printing apparatus | Performing Operations; Transporting | 1 | Active |
| US10556448B2 | Ink jet printing apparatus and ink jet printing method | Performing Operations; Transporting | 1 | Active |
| US10464311B2 | Ink jet recording method and ink jet recording apparatus | Performing Operations; Transporting | 1 | Active |
| US8028991B2 | Image forming apparatus | Physics | 1 | Active |
| US10543705B2 | Ink jet recording method using porous body | Performing Operations; Transporting | 1 | Active |
| US10569580B2 | Ink jet recording apparatus and ink jet recording method | Performing Operations; Transporting | 1 | Active |
| US10507666B2 | Ink jet recording apparatus and method of producing porous body | Performing Operations; Transporting | 1 | Active |
| US10525700B2 | Transfer type ink jet recording method and transfer type ink jet recording apparatus | Performing Operations; Transporting | 0 | Active |
| US10730285B2 | Ink jet printing apparatus and ink jet printing method | Performing Operations; Transporting | 0 | Active |
| US12059907B2 | Recording apparatus and recording method | Performing Operations; Transporting | 0 | Active |
| US11001053B2 | Ink jet recording method and ink jet recording apparatus | Performing Operations; Transporting | 0 | Active |
| US10696076B2 | Ink jet recording apparatus and ink jet recording method | General | 0 | Revoked |
| US10723122B2 | Image forming apparatus and image forming method | Performing Operations; Transporting | 0 | Active |
| US10569586B2 | Ink jet recording apparatus | Performing Operations; Transporting | 0 | Active |
| US10857784B2 | Printing method and printing apparatus | Performing Operations; Transporting | 0 | Active |
| US10730330B2 | Ink jet recording apparatus and ink jet recording method | Performing Operations; Transporting | 0 | Active |
| US10391801B2 | Inkjet recording method and inkjet recording apparatus | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.