Kohei Hasegawa
43Patents
7h-index
77Co-inventors
72Inventor score
Filing activity: Oct 9, 1990 → Dec 9, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8828557B2 | High strength galvanized steel sheet having excellent formability, weldability, and fatigue properties and method for manufacturing the same | Emerging Cross-Sectional Technologies | 20 | Active |
| US5075622A | Sheet thickness measuring apparatus with magnetic and optical sensors | Physics | 18 | Expired |
| US5580402A | Low baking temperature hardenable aluminum alloy sheet for press-forming | Chemistry; Metallurgy | 9 | Expired |
| US5441582A | Method of manufacturing natural aging-retardated aluminum alloy sheet exhibiting excellent formability and excellent bake hardenability | Chemistry; Metallurgy | 8 | Expired |
| US10084442B2 | Semiconductor device | Electricity | 8 | Active |
| US7919194B2 | High strength steel sheet having superior ductility | Emerging Cross-Sectional Technologies | 7 | Active |
| US10174396B2 | High-strength cold-rolled steel sheet and method for manufacturing the same (as amended) | Chemistry; Metallurgy | 7 | Active |
| US5460666A | Method of manufacturing natural aging-retardated aluminum alloy sheet | Chemistry; Metallurgy | 5 | Expired |
| US10156005B2 | High-yield-ratio, high-strength cold rolled steel sheet and production method therefor | Chemistry; Metallurgy | 5 | Active |
| US6245852A | Preparation of organopolysiloxane emulsion | Chemistry; Metallurgy | 4 | Expired |
| US9806706B2 | Switching unit and power supply circuit | Emerging Cross-Sectional Technologies | 3 | Active |
| US10077486B2 | High-strength cold-rolled steel sheet and method of manufacturing the same | Chemistry; Metallurgy | 3 | Active |
| US9057123B2 | Hot-rolled steel sheet and method for producing same | Chemistry; Metallurgy | 3 | Active |
| US9145594B2 | Method for manufacturing ultra high strength member | Chemistry; Metallurgy | 3 | Active |
| US8389128B2 | High tensile-strength galvanized steel sheet and process for manufacturing high tensile-strength galvanized steel sheet | Emerging Cross-Sectional Technologies | 3 | Active |
| US10196727B2 | High strength galvanized steel sheet having excellent bendability and weldability, and method of manufacturing the same | Emerging Cross-Sectional Technologies | 3 | Active |
| US7507307B2 | Method for producing cold rolled steel plate of super high strength | Chemistry; Metallurgy | 2 | Expired |
| US6695933B2 | Ultra-high strength cold rolled steel sheet and method for manufacturing the same | Chemistry; Metallurgy | 2 | Expired |
| US9941874B2 | Switching unit and power supply circuit | Emerging Cross-Sectional Technologies | 1 | Active |
| US10253389B2 | High-yield-ratio, high-strength cold-rolled steel sheet and production method therefor | Chemistry; Metallurgy | 1 | Active |
| US10094587B2 | Heat-exchange ventilation device | Emerging Cross-Sectional Technologies | 1 | Active |
| US8668789B2 | Method for manufacturing of high strength cold rolled steel sheet of excellent phosphatability | Chemistry; Metallurgy | 1 | Active |
| US9574254B2 | Hot-rolled steel sheet and method for producing same | Chemistry; Metallurgy | 1 | Active |
| US9090952B2 | High-strength cold-rolled steel sheet and method for producing the same | Chemistry; Metallurgy | 1 | Active |
| US10941471B2 | High-strength steel sheet, high-strength galvanized steel sheet, method for manufacturing high-strength steel sheet, and method for manufacturing high-strength galvanized steel sheet | Chemistry; Metallurgy | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.