Ryuji Kato
45Patents
5h-index
47Co-inventors
65Inventor score
Filing activity: Sep 16, 2002 → Jun 4, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6783222B2 | Water base pigment ink for ink-jet recording and ink-jet recording method | Chemistry; Metallurgy | 15 | Expired |
| US6679598B2 | Water base pigment ink for ink-jet recording and ink-jet recording apparatus | Chemistry; Metallurgy | 13 | Expired |
| US7766471B2 | Ink set for ink-jet recording | Chemistry; Metallurgy | 7 | Active |
| US7465345B2 | Ink-jet ink set | Chemistry; Metallurgy | 7 | Active |
| US7244296B2 | Water based ink set for ink-jet recording and inkjet recording method | Chemistry; Metallurgy | 6 | Expired |
| US7736425B2 | Ink set for ink-jet recording, ink for ink-jet recording and method for forming image | Chemistry; Metallurgy | 5 | Active |
| US7736424B2 | Ink set for ink-jet recording, ink for ink-jet recording and method for forming image | Chemistry; Metallurgy | 5 | Active |
| US8338174B2 | Material for ameliorating skin tissue and method for producing the same | Chemistry; Metallurgy | 4 | Active |
| US9567560B2 | Incubated state evaluating device, incubated state evaluating method, incubator, and program | Chemistry; Metallurgy | 4 | Active |
| US7553361B2 | Water base ink for ink-jet recording | Chemistry; Metallurgy | 2 | Expired |
| US7244297B2 | Water based ink set for ink-jet recording and inkjet recording method | Chemistry; Metallurgy | 2 | Expired |
| US7686444B2 | Water-based ink for ink-jet recording and ink-jet recording method | Chemistry; Metallurgy | 2 | Active |
| US8691004B2 | Method of ink-jet recording, pretreatment liquid, ink set, and ink-jet recording apparatus | Chemistry; Metallurgy | 2 | Active |
| US8690304B2 | Treatment solution for ink-jet recording, water-based ink set for ink-jet recording, ink-jet recording method, and ink-jet recording apparatus | Performing Operations; Transporting | 2 | Active |
| US7384460B2 | Water-based ink set for ink-jet recording and ink-jet recording method | Chemistry; Metallurgy | 2 | Expired |
| US8061822B2 | Liquid droplet jetting apparatus | Performing Operations; Transporting | 1 | Active |
| US7137693B2 | Ink container and ink container-sealing wrapper assembly | Performing Operations; Transporting | 1 | Expired |
| US7357832B2 | Water base pigment ink for ink-jet recording, ink cartridge accommodating the same, and ink-jet recording method | Chemistry; Metallurgy | 1 | Expired |
| US7416590B2 | Water-based ink set for ink-jet recording | Chemistry; Metallurgy | 1 | Active |
| US7407537B2 | Ink set for ink-jet recording, method for producing the same, and the ink-jet printer | Chemistry; Metallurgy | 1 | Expired |
| US7971983B2 | Ink set for ink-jet recording, ink-jet recording method, and ink-jet recording apparatus | Chemistry; Metallurgy | 1 | Active |
| US7384461B2 | Water-based ink set for ink-jet recording and ink-jet recording method | Chemistry; Metallurgy | 1 | Expired |
| US8282718B2 | Surface treatment solution, ink set, ink-jet recording method, and ink-jet recording apparatus | Textiles; Paper | 0 | Active |
| US7438751B2 | Ink-jet ink set | Chemistry; Metallurgy | 0 | Active |
| US8162435B2 | Liquid droplet jetting apparatus | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.