Yasuhiro Ishiwata
41Patents
5h-index
64Co-inventors
72Inventor score
Filing activity: Apr 14, 1994 → Jan 24, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5643709A | Thermal transfer recording material | Emerging Cross-Sectional Technologies | 14 | Expired |
| US9075281B2 | Colored composition and image display structure | Physics | 14 | Active |
| US8771810B2 | Polymerizable composition, polymer, and film | Physics | 5 | Active |
| US7662193B2 | Hair dye composition | Human Necessities | 5 | Expired |
| US8765235B2 | Polymerizable compound | Physics | 5 | Active |
| US5543279A | Silver halide light-sensitive material | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9335538B2 | Electrowetting display device and dye composition for electrowetting display | Physics | 2 | Active |
| US7651538B2 | Hair dye composition | Human Necessities | 2 | Expired |
| US5585231A | Heat developable color light-sensitive material with pyrazolotriazole containing dye | Physics | 2 | Expired |
| US7476261B2 | Hair dye composition | Human Necessities | 2 | Expired |
| US6238856A | Silver halide color photographic material and image-forming method | Physics | 1 | Expired |
| US10351526B2 | Coloring curable resin composition, cured film, color filter, method for manufacturing color filter, solid-state imaging device, image display device, compound, and cation | Physics | 1 | Active |
| US9720319B2 | Colored composition, cured film, color filter, method for manufacturing color filter, solid-state imaging element, image display device, and compound | Chemistry; Metallurgy | 1 | Active |
| US6127088A | Heat developable color light-sensitive material | Physics | 1 | Expired |
| US6555691B2 | Color developing agent, azo dye, silver halide photographic light-sensitive material, and image-forming method | Physics | 1 | Expired |
| US8741508B2 | Colored curable composition, color resist, ink-jet ink, color filter and method for producing the same, solid-state image pickup device, image display device, liquid crystal display, organic el display, and colorant compound and tautomer thereof | Physics | 1 | Active |
| US7629459B2 | Azo dye compound | Chemistry; Metallurgy | 1 | Active |
| US9481829B2 | Compound, haze-lowering agent, liquid crystal composition, polymer material, and film | Chemistry; Metallurgy | 0 | Active |
| US12204200B2 | Polarizer and image display device | Electricity | 0 | Active |
| US9256062B2 | Electrowetting display apparatus and dye composition for electrowetting display | Physics | 0 | Active |
| US6495304B2 | Color-developing agent, silver halide photographic light-sensitive material and image-forming method | Physics | 0 | Expired |
| US5665529A | Color diffusion transfer photographic material | Physics | 0 | Expired |
| US9493705B2 | Polymerizable liquid crystal compound, polymerizable composition, polymer material, and film | Physics | 0 | Active |
| US7220857B2 | Azo dye compound | Chemistry; Metallurgy | 0 | Expired |
| US6124084A | Silver halide photographic light-sensitive material | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.