Takaichiro Umeda
88Patents
8h-index
28Co-inventors
78Inventor score
Filing activity: Dec 15, 1995 → Sep 1, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8057022B2 | Inkjet printers | Performing Operations; Transporting | 25 | Active |
| US5800076A | Printer having guide plate extending to printhead | Performing Operations; Transporting | 22 | Expired |
| US7410248B2 | Air bubble removal in an ink jet printer | Performing Operations; Transporting | 21 | Active |
| US7976140B2 | Liquid droplet ejecting apparatus | Performing Operations; Transporting | 17 | Active |
| US5926193A | Printer having power transmission change-over mechanism for purging mechanism | Performing Operations; Transporting | 12 | Expired |
| US7607769B2 | Refill unit | Performing Operations; Transporting | 9 | Active |
| US7597430B2 | Ink supply apparatus | Performing Operations; Transporting | 9 | Active |
| US6471330B1 | Maintenance cap forming a sealed condition around nozzle rows of an ink jet print head | Performing Operations; Transporting | 9 | Expired |
| US6918650B2 | Inkjet recording apparatus, ink guide member and purge unit | Performing Operations; Transporting | 8 | Expired |
| US5884909A | Paper feeder and printer | Performing Operations; Transporting | 7 | Expired |
| US8025372B2 | Ink jet printer | Performing Operations; Transporting | 7 | Active |
| US5992846A | Sheet feeder and printer | Performing Operations; Transporting | 7 | Expired |
| US6742862B2 | Print head purging unit that selects nozzle row to be purged using rotating member | Performing Operations; Transporting | 6 | Expired |
| US5856835A | Ink jet print recording apparatus having a single sensor controlling paper feed and print head recovery | Performing Operations; Transporting | 6 | Expired |
| US6883896B2 | Ink jet recording apparatus | Performing Operations; Transporting | 6 | Expired |
| US7488060B2 | Liquid supplying apparatus and liquid ejecting apparatus | Performing Operations; Transporting | 5 | Active |
| US7422313B2 | Liquid droplet ejecting apparatus | Performing Operations; Transporting | 5 | Active |
| US5738455A | Sheet feeding device | Performing Operations; Transporting | 5 | Expired |
| US7806506B2 | Droplet ejecting device having cap that seals nozzles | Performing Operations; Transporting | 4 | Active |
| US8192001B2 | Cartridge ejection apparatus for inkjet printing | Performing Operations; Transporting | 4 | Active |
| US7621626B2 | Inkjet recording apparatus | Performing Operations; Transporting | 4 | Active |
| US6467872B1 | Print head purging unit that selects nozzle row to be purged using rotating member | Performing Operations; Transporting | 4 | Expired |
| US7654656B2 | Ink-jet recording apparatus | Performing Operations; Transporting | 3 | Active |
| US7944910B2 | Ink cartridges and systems having such ink cartridges | Performing Operations; Transporting | 3 | Active |
| US7926924B2 | Inkjet printer | Performing Operations; Transporting | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.