Michihiko Namba
59Patents
14h-index
51Co-inventors
87Inventor score
Filing activity: Oct 30, 1997 → Feb 26, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6492079B2 | Electrophotographic photoconductor, image forming apparatus, and process cartridge using the photoconductor | Physics | 48 | Expired |
| US8304043B2 | Inkjet recording ink and recording media set, inkjet recording method, recorded matter and recording apparatus | Emerging Cross-Sectional Technologies | 44 | Active |
| US6548216B2 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD AND APPARATUS, AND PROCESS CARTRIDGE USING THE PHOTOCONDUCTOR, AND LONG-CHAIN ALKYL GROUP CONTAINING BISPHENOL COMPOUND AND POLYMER MADE THEREFROM | Physics | 38 | Expired |
| US7284851B2 | Inkjet recording ink, recording process and recording apparatus | Chemistry; Metallurgy | 31 | Expired |
| US7810919B2 | Recording ink, ink cartridge, ink record, inkjet recording apparatus, and inkjet recording method | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6544701B2 | REACTION PRODUCT, PROCESS FOR THE PRODUCTION THEREOF, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR USING THE REACTION PRODUCT, ELECTROPHOTOGRAPHIC APPARATUS USING THE PHOTOCONDUCTOR, AND PROCESS CARTRIDGE FOR ELECTROPHOTOGRAPHIC APPARATUS | Physics | 25 | Expired |
| US7094813B2 | Ink-jet recording ink, ink-jet recording ink set, ink cartridge, ink-jet printer, and ink-jet printing method | Chemistry; Metallurgy | 25 | Expired |
| US7892340B2 | Ink-jet recording ink, ink-jet recording ink set, ink-jet recording ink media set, ink cartridge, ink-jet recording method and ink-jet recording apparatus | Chemistry; Metallurgy | 24 | Active |
| US6465648B1 | REACTION PRODUCT, PROCESS OF PRODUCING SAME, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR USING SAME, ELECTROPHOTOGRAPHIC APPARATUS HAVING THE PHOTOCONDUCTOR, AND PROCESS CARTRIDGE FOR ELECTROPHOTOGRAPHIC APPARATUS | Physics | 24 | Expired |
| US7682011B2 | Recording ink, ink cartridge, ink record, inkjet recording apparatus and inkjet recording process | Chemistry; Metallurgy | 24 | Active |
| US7699457B2 | Recording ink, ink cartridge, ink record, inkjet recording apparatus, and inkjet recording method | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6596449B2 | Electrophotographic photoreceptor, and process cartridge and electrophotographic image forming apparatus using the electrophotographic photoreceptor | Physics | 23 | Expired |
| US8044114B2 | Ink for recording, and ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method using the same | Emerging Cross-Sectional Technologies | 17 | Active |
| US6313288A | Mixture of titanyltetraazaporphyrin compounds and electrophotographic photoconductor using the same | Chemistry; Metallurgy | 15 | Expired |
| US5942362A | Electrophotographic photoconductor | Physics | 13 | Expired |
| US6074792A | Tetraazaporphyrin pigment for use in electrophotographic photoconductor and electrophotographic photoconductor using the same | Physics | 12 | Expired |
| US6068956A | Electrophotographic photoconductor | Physics | 11 | Expired |
| US7056633B2 | Electrophotographic photoconductor, image forming method and apparatus, and process cartidge using the photocondutor, and long-chain alkyl group containing bisphenol compound and polymer made therefrom | Physics | 10 | Expired |
| US6974654B2 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD AND APPARATUS, AND PROCESS CARTRIDGE USING THE PHOTOCONDUCTOR, AND LONG-CHAIN ALKYL GROUP CONTAINING BISPHENOL COMPOUND AND POLYMER MADE THEREFROM | Physics | 10 | Expired |
| US6524761B2 | Mixture of titanyltetraazaporphyrin compounds and electrophotographic photoconductor using the same | Chemistry; Metallurgy | 10 | Expired |
| US7122284B2 | Electrophotographic photoconductor, image forming method and apparatus, and process cartridge using the photoconductor, and long-chain alkyl group containing bisphenol compound and polymer made therefrom | Physics | 8 | Expired |
| 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 |
| US8173227B2 | Recording ink, ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus, and inkjet recording method | Performing Operations; Transporting | 8 | Active |
| US8096651B2 | Ink-jet recording method, ink, ink cartridge, recording apparatus, and recorded matter | Emerging Cross-Sectional Technologies | 7 | Active |
| US8586647B2 | Recording ink, recording ink set, records, ink cartridge, recording method, and inkjet recording apparatus | Emerging Cross-Sectional Technologies | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.