Akira Nagashima
175Patents
29h-index
134Co-inventors
93Inventor score
Filing activity: May 22, 1975 → Sep 20, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5451251A | Ink, and ink-jet recording method and instrument using the same | Chemistry; Metallurgy | 101 | Expired |
| US4258123A | Photosensitive resin composition | Emerging Cross-Sectional Technologies | 93 | Expired |
| US5571313A | Ink-jet ink | Chemistry; Metallurgy | 84 | Expired |
| US4279982A | Photosensitive compositions | Emerging Cross-Sectional Technologies | 75 | Expired |
| US4232106A | Photosensitive compositions containing 2-halomethyl-5-vinyl-1,3,4-oxadiazoles as free radical progenitors | Emerging Cross-Sectional Technologies | 74 | Expired |
| US5258066A | Ink containing halogenated alkanol with 2 to 4 carbon atoms, recording method and apparatus using the same | Chemistry; Metallurgy | 66 | Expired |
| US5296022A | Ink-jet recording method and apparatus employing ink containing halogenated alkanol with 2 to 4 carbon atoms | Chemistry; Metallurgy | 59 | Expired |
| US5537673A | Car stereo having a removable panel | Electricity | 53 | Expired |
| US6676254B2 | Recording method, ink cartridge, printing device and information recording apparatus | Performing Operations; Transporting | 51 | Expired |
| US7144449B2 | Print ink containing a plurality of fluorescent coloring materials and inkjet recording method | Performing Operations; Transporting | 50 | Expired |
| US5080716A | Ink having use in ink-jet recording | Chemistry; Metallurgy | 47 | Expired |
| US5213613A | Ink, and ink-jet recording method and instrument using the same | Performing Operations; Transporting | 47 | Expired |
| US5482545A | Ink, and ink-jet recording method and instrument using the same | Performing Operations; Transporting | 47 | Expired |
| US7141105B2 | Water-based fluorescent ink, recorded image using the same, and judging method | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5131949A | Ink, ink-jet recording process, and instrument making use of the ink | Performing Operations; Transporting | 44 | Expired |
| US5182579A | Ink-jet having ink storing absorbant material | Performing Operations; Transporting | 41 | Expired |
| US5078790A | Ink, ink-jet recording process, and instrument making use of the ink | Chemistry; Metallurgy | 40 | Expired |
| US6065214A | Portable trimmer | Human Necessities | 37 | Expired |
| US4654970A | Heated handle for a chain saw | Performing Operations; Transporting | 36 | Expired |
| US5029393A | Chain saw | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US5132700A | Ink-jet recording process and apparatus employing-ink for ink-jet recording | Chemistry; Metallurgy | 34 | Expired |
| US7185978B2 | Recording method, ink cartridge, printing device and information recording apparatus | Performing Operations; Transporting | 33 | Expired |
| US5444761A | On-vehicle mobile radio telephone with an answering function | Electricity | 33 | Expired |
| US4630372A | Front handle support means of portable chain saw | Performing Operations; Transporting | 32 | Expired |
| US6108867A | Handling device for power working machine | Emerging Cross-Sectional Technologies | 32 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.