Katsumi Nakajima
14Patents
5h-index
33Co-inventors
66Inventor score
Filing activity: Sep 5, 1990 → May 2, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5131778A | Coupling structure and method of resin moldings | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7252722B2 | Steel sheet | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6416594B1 | Heat shrink band steel sheet and manufacturing method thereof | Chemistry; Metallurgy | 6 | Expired |
| US6743306B2 | Steel sheet and method for manufacturing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US9222155B2 | Method for manufacturing high strength hot-rolled steel sheet having excellent stretch flangeability and fatigue resistance | Chemistry; Metallurgy | 5 | Active |
| US9212411B2 | High strength steel sheet and method for manufacturing the same | Emerging Cross-Sectional Technologies | 2 | Active |
| US9200344B2 | High strength hot rolled steel sheet having excellent bendability and method for manufacturing the same | Chemistry; Metallurgy | 2 | Active |
| US5194999A | Video recording and playback apparatus with automatic normal and preprogrammed mode data entry selection | Physics | 2 | Expired |
| US10400316B2 | High strength hot rolled steel sheet having tensile strength of 780 MPa or more | Chemistry; Metallurgy | 2 | Active |
| US7559997B2 | High-strength cold rolled steel sheet and process for producing the same | Chemistry; Metallurgy | 2 | Expired |
| US9068238B2 | High tensile strength hot rolled steel sheet having excellent formability and method for manufacturing the same | Chemistry; Metallurgy | 1 | Active |
| US10138536B2 | High-strength hot-rolled steel sheet and method for producing same | Chemistry; Metallurgy | 0 | Active |
| US10301693B2 | High-strength hot-rolled steel sheet and method for producing the same | Chemistry; Metallurgy | 0 | Active |
| US10301698B2 | Hot-rolled steel sheet for generator rim and method for manufacturing the same | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.