Etsuo Hamada
9Patents
3h-index
20Co-inventors
57Inventor score
Filing activity: Mar 19, 1998 → Dec 28, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6677053B2 | Surface-treated steel sheet and production method therefor | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6060899A | Semiconductor device with test circuit | Physics | 11 | Expired |
| US7338718B2 | Zinc hot dip galvanized steel plate excellent in press formability and method for production thereof | Emerging Cross-Sectional Technologies | 6 | Expired |
| US9200165B2 | Surface treatment liquid for zinc or zinc alloy coated steel sheet, zinc or zinc alloy-coated steel sheet, and method for manufacturing the same | Emerging Cross-Sectional Technologies | 3 | Active |
| US7875363B2 | Surface-treated steel sheet | Emerging Cross-Sectional Technologies | 2 | Active |
| US9512331B2 | Surface treatment agent for zinc or zinc alloy coated steel sheet, zinc or zinc alloy coated steel sheet, and method of producing the steel sheet | Emerging Cross-Sectional Technologies | 2 | Active |
| US8304092B2 | Surface-treated galvanized steel sheet with superior flat-portion corrosion resistance, blackening resistance, and appearance and corrosion resistance after press forming and aqueous surface-treatment liquid for galvanized steel sheet | Emerging Cross-Sectional Technologies | 2 | Active |
| US8900962B2 | Method for manufacturing semiconductor device | Electricity | 2 | Active |
| US10763112B2 | Method for manufacturing device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.