Masamitsu Ishitobi
7Patents
4h-index
13Co-inventors
50Inventor score
Filing activity: Mar 2, 1995 → Apr 8, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5759709A | Polymeric fluorescent substance and organic electroluminescence device | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6403237B1 | Polymeric fluorescent substance and organic electroluminescence device | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6849202B2 | COMPOUND HAVING PHENYLACETYLENE STRUCTURE, LIQUID CRYSTAL COMPOSITION, POLYMER, OPTICALLY ANISOTROPIC PRODUCT, OPTICAL OR LIQUID CRYSTAL ELEMENT, DIBENZOTHIOPHENE COMPOUND, INTERMEDIATE, AND PROCESS FOR PRODUCING THE SAME | Chemistry; Metallurgy | 10 | Expired |
| US5980781A | Polymeric fluorescent substance and organic electroluminescence device | Emerging Cross-Sectional Technologies | 8 | Expired |
| US9011994B2 | Gas-barrier multilayer film | Emerging Cross-Sectional Technologies | 3 | Active |
| US7135579B2 | Dibenzothiophene oxide compound, and process for producing the same | Chemistry; Metallurgy | 3 | Expired |
| US6994921B2 | Polymeric fluorescent substance and polymer light emitting device | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.