Inventor · Sodegaura, JP

Hirokatsu Ito

68Patents
6h-index
35Co-inventors
68Inventor score

Filing activity: Sep 28, 2006 → Dec 19, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US10435350B2 Organic electroluminecence device Electricity 124 Active
US8883323B2 Organic electroluminescence device Emerging Cross-Sectional Technologies 17 Active
US8803420B2 Organic electroluminescence device Electricity 15 Active
US9099658B2 Organic electroluminescence device Electricity 15 Active
US9324950B2 Organic electroluminescence device Electricity 12 Active
US9353027B2 Organic electroluminescent element using pyrene derivative Electricity 8 Active
US9484540B2 Oxygen-containing fused ring derivative and organic electroluminescence device comprising the same Electricity 6 Active
US9273002B2 Benzo[k]fluoranthene derivative and organic electroluminescence device containing the same Electricity 4 Active
US9126943B2 Nitrogenated heterocyclic ring derivative and organic electroluminescent element comprising same Electricity 3 Active
US9748492B2 Organic electroluminescent device Electricity 3 Active
US11117857B2 Compound, material for organic electroluminescent elements, organic electroluminescent element and electronic device Electricity 2 Active
US10424740B2 Compound, material for organic electroluminescence devices, organic electroluminescence device, and electronic device Electricity 2 Active
US9818953B2 Aromatic amine derivative, material for organic electroluminescent element, and organic electroluminescent element Electricity 2 Active
US9312500B2 Organic electroluminescence device Electricity 2 Active
US10103338B1 Organic electroluminescence device and electronic device Electricity 2 Active
US9963429B2 Carbazole derivative, material for organic electroluminescent element which comprises same, and organic electroluminescent element and electronic device each manufactured using same Electricity 2 Active
US9947879B2 Anthracene derivative and organic electroluminescence element using same Chemistry; Metallurgy 2 Active
US9640773B2 Aromatic amine derivative and organic electroluminescence element using same Electricity 1 Active
US9748494B2 Compound, material for organic electroluminescence element, organic electroluminescence element, and electronic apparatus Electricity 1 Active
US9991445B2 Heterocyclic compound, material for organic electroluminescence device including the same, and organic electroluminescence device and electronic equipment employing the same Electricity 1 Active
US10270040B2 Oxygen-containing fused ring amine compound, sulfur-containing fused ring amine compound and organic electroluminescence device Electricity 1 Active
US10056558B2 Aromatic amine derivative, material for organic electroluminescent element, and organic electroluminescent element Electricity 1 Active
US9902687B2 Compound Electricity 1 Active
US10109804B1 Organic electroluminescence device and electronic device Electricity 1 Active
US11548877B2 Compound, material for organic electroluminescence device, organic electroluminescence device, and electronic device Electricity 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.