Yasuyuki Hirai
42Patents
13h-index
106Co-inventors
84Inventor score
Filing activity: May 26, 1989 → Aug 18, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6267064A | Laboratory furniture unit | Human Necessities | 118 | Expired |
| US6748707B1 | Utility interface system | Electricity | 57 | Expired |
| US6663233B2 | Inkjet printing apparatus and ink supplying method | Performing Operations; Transporting | 39 | Expired |
| US5142335A | Electrostatic latent image-developing device and toner cartridge used therefor | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5294963A | Toner cartridge having opening for discharging toner sealed with sealing member and method of stripping sealing member | Physics | 37 | Expired |
| US8651614B2 | Inkjet printing apparatus and ink discharge control method | Performing Operations; Transporting | 35 | Active |
| US6250019A | Furniture arrangement configured to support overhead utilities and lighting | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US8807556B2 | Sheet conveying apparatus, printing apparatus, and processing apparatus | Performing Operations; Transporting | 23 | Active |
| US6783215B2 | Ink container, inkjet printing apparatus, and ink supplying method | Performing Operations; Transporting | 23 | Expired |
| US7041772B2 | Method for producing benzoxazine resin | Chemistry; Metallurgy | 20 | Expired |
| US6948803B2 | Ink container, inkjet printing apparatus and ink supplying method | Performing Operations; Transporting | 18 | Expired |
| US5363177A | Method of stripping a sealing member from a toner cartridge | Physics | 14 | Expired |
| USD437708S | Furniture unit | General | 14 | Expired |
| US5945222A | Thermosetting resin composition, cured product, prepreg, metal-clad laminate and wiring board | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6523821B2 | Paper feeder apparatus for use with image forming apparatus | Performing Operations; Transporting | 10 | Expired |
| US7547011B2 | Sheet feeding device and image forming apparatus | Performing Operations; Transporting | 9 | Active |
| US5761586A | Developing device for image forming apparatus, toner container insertable into the developing device, and image forming apparatus provided therewith | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6837921B2 | Ink tank | Performing Operations; Transporting | 8 | Expired |
| US6005064A | Thermosetting compounds, cured product thereof and method of preparing the thermosetting compound | Chemistry; Metallurgy | 7 | Expired |
| US5136341A | Image forming apparatus having means for coordinating the input and discharge of copy paper | Physics | 7 | Expired |
| US6720077B2 | Resin composition, and use and method for preparing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6913339B2 | Head recovery device, head recovery method and ink jet recording apparatus | Performing Operations; Transporting | 5 | Expired |
| US5337125A | Toner feeding device | Physics | 3 | Expired |
| US6899412B2 | Ink jet recording apparatus and recovery mechanism portion of ink jet recording apparatus | Performing Operations; Transporting | 3 | Expired |
| US6685308B2 | Image forming apparatus | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.