Ken Hashimoto
111Patents
25h-index
92Co-inventors
93Inventor score
Filing activity: Mar 22, 1984 → Aug 4, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6999779B1 | Position information management system | Physics | 196 | Expired |
| US5969005A | Ink for ink jet recording and ink jet recording method | Emerging Cross-Sectional Technologies | 149 | Expired |
| US6153001A | Ink jet recording ink, method for producing the same, and ink jet recording method | Chemistry; Metallurgy | 98 | Expired |
| US5939826A | Plasma display system | Electricity | 72 | Expired |
| US4544863A | Power supply apparatus for fluorescent lamp | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5818168A | Gas discharge display panel having communicable main and auxiliary discharge spaces and manufacturing method therefor | Electricity | 52 | Expired |
| US5553250A | Bus terminating circuit | Electricity | 51 | Expired |
| US5431722A | Ink for inkjet printing | Chemistry; Metallurgy | 50 | Expired |
| US6876791B2 | Diffraction grating device | Physics | 48 | Expired |
| US5900899A | Ink unit for use in ink jet recording and ink jet recording method | Chemistry; Metallurgy | 46 | Expired |
| US6037847A | Surface acoustic wave device using a leaky surface acoustic wave with an optimized cut angle of a piezoelectric substrate | Electricity | 40 | Expired |
| US5462590A | Ink-jet ink and method of printing using the same | Chemistry; Metallurgy | 39 | Expired |
| US5980623A | Ink set for ink jet recording and ink jet recording method | Performing Operations; Transporting | 39 | Expired |
| US6048390A | Ink jet recording ink and ink jet recording method | Chemistry; Metallurgy | 39 | Expired |
| US6261353A | Recording material and image forming method using the same | Chemistry; Metallurgy | 38 | Expired |
| US8546466B2 | Image recording composition, ink set for image recording, recording apparatus, and image recording method | Performing Operations; Transporting | 36 | Active |
| US5825380A | Ink-jet recording head cleaning method and cleaning cartridge therefor | Performing Operations; Transporting | 36 | Expired |
| US6245832A | Ink for ink jet recording | Chemistry; Metallurgy | 35 | Expired |
| US5441561A | Ink-jet recording ink and ink-jet recording methods thereof | Chemistry; Metallurgy | 35 | Expired |
| US4767688A | Charge controlling method and developers containing a charge-exchange control agent comprising organic boron compound | Physics | 27 | Expired |
| US6368397B1 | Ink for ink jet printing | Chemistry; Metallurgy | 26 | Expired |
| US5883157A | Ink jet recording ink and ink jet recording method | Chemistry; Metallurgy | 26 | Expired |
| US5382283A | Ink containing propylene oxide/ethylene oxide block copolymers for ink jet recording | Chemistry; Metallurgy | 26 | Expired |
| US5948155A | Ink-jet recording ink and recording method using the same | Chemistry; Metallurgy | 26 | Expired |
| US6033463A | Multicolor ink set and ink jet recording method | Chemistry; Metallurgy | 25 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.