Masahiko Ishikawa
23Patents
5h-index
49Co-inventors
69Inventor score
Filing activity: Nov 19, 1991 → Jan 17, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5379263A | Semiconductor memory device which can provide required data flexibly under simplified control and operating method therefor | Physics | 42 | Expired |
| US5812863A | Apparatus for correcting misspelling and incorrect usage of word | Physics | 24 | Expired |
| US5317195A | Semiconductor device improved in light shielding property and light shielding package | Electricity | 13 | Expired |
| US5394014A | Semiconductor device improved in light shielding property and light shielding package | Electricity | 10 | Expired |
| US8889570B2 | Light-transmitting electromagnetic-shielding laminate and method for producing the same, light-transmitting radio wave absorber, and adhesive composition | Emerging Cross-Sectional Technologies | 6 | Active |
| US5321097A | Heat-resistant resin composition | Chemistry; Metallurgy | 4 | Expired |
| US8906573B2 | Reinforced solid polymer electrolyte composite membrane, membrane electrode assembly for solid polymer fuel cell, and solid polymer fuel cell | Emerging Cross-Sectional Technologies | 2 | Active |
| US10266710B2 | Ink, image forming method, and liquid discharging device | Chemistry; Metallurgy | 1 | Active |
| US9248608B2 | Manufacturing method and manufacturing apparatus of an absorbent body | Human Necessities | 1 | Active |
| US10151991B2 | Toner, toner stored unit, and image forming apparatus | Physics | 1 | Active |
| US10113078B2 | Ink discharge device and ink discharge method | Performing Operations; Transporting | 1 | Active |
| US9482973B2 | Toner, method of manufacturing the toner, developer, and process cartridge | Physics | 0 | Active |
| US5457174A | Method for preparing polycarbonates by transesterification in a steel reactor | Chemistry; Metallurgy | 0 | Expired |
| US8063391B2 | Light-transmitting electromagnetic wave-shielding material | Electricity | 0 | Active |
| US9618862B2 | Toner and developer | Physics | 0 | Active |
| US9971261B2 | Toner | Physics | 0 | Active |
| US11181709B2 | Manufacturing method of optical fiber ribbon and manufacturing apparatus thereof | Physics | 0 | Active |
| US9618863B2 | Toner, developer and method of manufacturing toner | Performing Operations; Transporting | 0 | Active |
| US9785065B2 | Toner, and method for manufacturing toner | Physics | 0 | Active |
| US11499062B2 | Ink, ink set, ink container, image forming method, and image forming apparatus | Performing Operations; Transporting | 0 | Active |
| US10286666B2 | Ink discharge device and ink discharge method | Performing Operations; Transporting | 0 | Active |
| US10190007B2 | Ink, ink container, image forming method, image forming apparatus, and image formed matter | Chemistry; Metallurgy | 0 | Active |
| US7865114B2 | Image forming apparatus, image forming method and process cartridge | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.