Hiroshi Sumiya
12Patents
4h-index
21Co-inventors
60Inventor score
Filing activity: Jul 25, 1990 → Jan 29, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5315691A | Print control apparatus | Physics | 38 | Expired |
| US5355441A | Printing control apparatus | Physics | 25 | Expired |
| US6671360B2 | Intercom system for a building or apartment house | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6722627B2 | Electromagnetic valve device and manufacturing method thereof | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7075394B2 | Electromagnetic drive flow controller | Electricity | 4 | Expired |
| US6070964A | Multicolor printing device | Performing Operations; Transporting | 4 | Expired |
| US6879670B2 | Collective housing intercom apparatus | Electricity | 4 | Expired |
| US5136153A | Color image forming apparatus having image intensifier unit | Electricity | 4 | Expired |
| US10497878B2 | Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine | Emerging Cross-Sectional Technologies | 1 | Active |
| US10522763B2 | Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine | Emerging Cross-Sectional Technologies | 0 | Active |
| US10399960B2 | Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine | Emerging Cross-Sectional Technologies | 0 | Active |
| US7079175B2 | Television intercom system | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.