Naoki Katayama
60Patents
8h-index
48Co-inventors
78Inventor score
Filing activity: Nov 14, 1995 → Sep 23, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6318853A | Image forming apparatus having intermediate medium | Performing Operations; Transporting | 41 | Expired |
| US5648601A | Apparatus for analyzing air/fuel ratio sensor characteristics | Physics | 15 | Expired |
| US7178911B2 | Ink cartridge | Performing Operations; Transporting | 14 | Expired |
| US7144104B2 | Inkjet recording apparatus and ink cartridge | Performing Operations; Transporting | 13 | Expired |
| US7178908B2 | Buffer tank for ink jet printer | Performing Operations; Transporting | 11 | Expired |
| US7594714B2 | Inkjet printer head | Performing Operations; Transporting | 11 | Active |
| US7357494B2 | Ink cartridge and ink-jet printer | Performing Operations; Transporting | 10 | Expired |
| US9649950B2 | Power supply apparatus | Emerging Cross-Sectional Technologies | 8 | Active |
| US7168800B2 | Inkjet recording apparatus and ink cartridge | Performing Operations; Transporting | 7 | Expired |
| US7237884B2 | Ink cartridge | Performing Operations; Transporting | 7 | Expired |
| US7152954B2 | Set of ink cartridges, ink cartridge and ink jet printer | Performing Operations; Transporting | 7 | Expired |
| US7328987B2 | Ink cartridge and inkjet printer | Performing Operations; Transporting | 6 | Expired |
| US6808245B2 | Cartridge and cartridge detecting device | Performing Operations; Transporting | 5 | Expired |
| US9859738B2 | Battery system controller | Emerging Cross-Sectional Technologies | 5 | Active |
| USD924800S1 | Motor | General | 5 | Active |
| US7284846B2 | Ink injection system and ink cartridge for use in the same | Performing Operations; Transporting | 5 | Expired |
| US7008049B2 | Inkjet head | Performing Operations; Transporting | 5 | Expired |
| US10875418B2 | Charge control apparatus and system | Emerging Cross-Sectional Technologies | 4 | Active |
| US7185974B2 | Ink-jet recording apparatus | Performing Operations; Transporting | 4 | Expired |
| USD925449S1 | Motor | General | 4 | Active |
| US7438389B2 | Inkjet head | Performing Operations; Transporting | 4 | Active |
| USD906256S1 | Motor | General | 4 | Active |
| US7080898B2 | Ink cartridge and ink jet recording apparatus | Performing Operations; Transporting | 3 | Expired |
| US7543918B2 | Liquid jetting head and method for producing the same | Performing Operations; Transporting | 3 | Active |
| US7568783B2 | Inkjet head | Performing Operations; Transporting | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.