Akihiko Matsuyama
61Patents
10h-index
64Co-inventors
77Inventor score
Filing activity: Nov 2, 2001 → Jul 10, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7919544B2 | Ink-media set, ink composition, ink cartridge, inkjet recording method, inkjet recording apparatus, and ink recorded matter | Chemistry; Metallurgy | 74 | Active |
| US8242201B2 | Pigment dispersion, recording ink, ink cartridge, ink-jet recording method and ink-jet recording apparatus | Emerging Cross-Sectional Technologies | 45 | Active |
| US7977408B2 | Recording ink, ink set, ink cartridge, ink record, inkjet recording apparatus and inkjet recording method | Chemistry; Metallurgy | 41 | Active |
| US6641964B2 | Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor | Physics | 39 | Expired |
| US6790572B2 | Electrophotographic photoreceptor, and image forming method and apparatus using the photoreceptor | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6844124B2 | Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor | Physics | 15 | Expired |
| US8109622B2 | Recording ink, ink cartridge, inkjet recording method, and inkjet recording apparatus | Chemistry; Metallurgy | 13 | Active |
| US9234110B2 | Ink for inkjet recording, and ink cartridge, inkjet recording method, inkjet recorder, ink-recorded matter and method of producing the ink-recorded matter using the ink | Emerging Cross-Sectional Technologies | 13 | Active |
| US6858362B2 | Electrophotographic photoreceptor, and image forming method and apparatus using the photoreceptor | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8746869B2 | Ink for inkjet recording, inkjet recording method using the same, ink cartridge housing the same, and recorded matter | Performing Operations; Transporting | 10 | Active |
| US8252207B2 | Ink for inkjet recording, ink set for inkjet recording, ink media set for inkjet recording, ink cartridge, inkjet recording method, and inkjet recording apparatus | Chemistry; Metallurgy | 8 | Active |
| US9217089B2 | Ink for inkjet recording | Emerging Cross-Sectional Technologies | 8 | Active |
| US8974895B2 | Inkjet ink, ink storage container, inkjet recording device, and recorded matter | Emerging Cross-Sectional Technologies | 7 | Active |
| US8960885B2 | Ink for inkjet recording, and ink cartridge, inkjet recording method, inkjet recorder, ink-recorded matter and method of producing the ink-recorded matter using the ink | Emerging Cross-Sectional Technologies | 7 | Active |
| US9441129B2 | Ink for inkjet recording, ink container, and inkjet recording device | Chemistry; Metallurgy | 6 | Active |
| US9034091B2 | Inkjet recording ink set, inkjet recording method, and recorded matter | Emerging Cross-Sectional Technologies | 6 | Active |
| US9359522B2 | Ink composition, ink cartridge, inkjet recording device, and inkjet printed matter | Emerging Cross-Sectional Technologies | 5 | Active |
| US8328343B2 | Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method | Emerging Cross-Sectional Technologies | 5 | Active |
| US9028056B1 | Ink for inkjet recording, ink container, inkjet recorder and recorded matter | Chemistry; Metallurgy | 4 | Active |
| US8945294B2 | Ink composition for inkjet recording, inkjet recording method, and inkjet recorded material | Emerging Cross-Sectional Technologies | 4 | Active |
| US7060404B2 | Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor and image forming apparatus using the electrophotographic photoreceptor | Physics | 4 | Expired |
| US9850391B2 | Ink, ink stored container, inkjet printing method, and inkjet printing device | Chemistry; Metallurgy | 4 | Active |
| US8727523B2 | Inkjet recording ink, ink cartridge and inkjet recording method | Chemistry; Metallurgy | 3 | Active |
| US8317913B2 | Inkjet ink, and ink cartridge, inkjet recording method, inkjet recording apparatus and ink record using the same | Chemistry; Metallurgy | 3 | Active |
| US8651650B2 | Inkjet recording ink, inkjet recording inkset, ink cartridge, inkjet recording method, and recorded matter | Chemistry; Metallurgy | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.