Kei Sakata
37Patents
10h-index
74Co-inventors
78Inventor score
Filing activity: Mar 16, 1984 → Dec 12, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6423426B1 | High tensile hot-dip zinc-coated steel plate excellent in ductility and method for production thereof | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6676774B2 | Hot rolled steel plate and cold rolled steel plate being excellent in strain aging hardening characteristics | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6410163B1 | High strength thin steel sheet, high strength alloyed hot-dip zinc-coated steel sheet, and method for producing them | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6537394B1 | Method for producing hot-dip galvanized steel sheet having high strength and also being excellent in formability and galvanizing property | Chemistry; Metallurgy | 19 | Expired |
| US6818074B2 | High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6210496A | High-strength high-workability cold rolled steel sheet having excellent impact resistance | Chemistry; Metallurgy | 16 | Expired |
| US5582658A | High strength steel sheet adapted for press forming and method of producing the same | Chemistry; Metallurgy | 16 | Expired |
| US6814819B2 | Methods of manufacturing hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening property | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7527700B2 | High strength hot rolled steel sheet and method for manufacturing the same | Chemistry; Metallurgy | 13 | Expired |
| US7396420B2 | Hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening property | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5360493A | High-strength cold-rolled steel sheet excelling in deep drawability and method of producing the same | Chemistry; Metallurgy | 9 | Expired |
| US4588181A | Double-feed prevention device in paper feeding apparatus | Performing Operations; Transporting | 8 | Expired |
| US6692584B2 | High tensile cold-rolled steel sheet excellent in ductility and in strain aging hardening properties, and method for producing the same | Chemistry; Metallurgy | 7 | Expired |
| US6638371B1 | Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same | Chemistry; Metallurgy | 7 | Expired |
| US5290370A | Cold-rolled high-tension steel sheet having superior deep drawability and method thereof | Chemistry; Metallurgy | 6 | Expired |
| US9862014B2 | Method for electric resistance welded steel tube | Emerging Cross-Sectional Technologies | 5 | Active |
| US5853503A | Hot rolled steel sheets and method of producing the same | Performing Operations; Transporting | 5 | Expired |
| US5356494A | High strength cold rolled steel sheet having excellent non-aging property at room temperature and suitable for drawing and method of producing the same | Chemistry; Metallurgy | 4 | Expired |
| US4586965A | Production of a base steel sheet to be surface-treated which is to produce no stretcher strain | Chemistry; Metallurgy | 4 | Expired |
| US5460665A | Method of manufacturing a low-alloy ultra-low-carbon cold anisotropy rolled steel sheet exhibiting an excellent resistance to fabrication embrittlement and small internal anisotropy | Chemistry; Metallurgy | 3 | Expired |
| US5846343A | Cold rolled steel sheet exhibiting excellent press workability and method of manufacturing the same | Chemistry; Metallurgy | 3 | Expired |
| US5542994A | Method for manufacturing a high-formable, high-strength cold-rolled steel sheet excellent in resistance to secondary working embrittlement | Chemistry; Metallurgy | 3 | Expired |
| US4857117A | Method of manufacturing a cold-rolled steel sheet having a good deep drawability | Chemistry; Metallurgy | 3 | Expired |
| US4931106A | Hot rolled steel sheet having high resistances against secondary-work embrittlement and brazing embrittlement and adapted for ultra-deep drawing and a method for producing the same | Chemistry; Metallurgy | 3 | Expired |
| US8747578B2 | Steel for structural part of automobile and method for producing the same | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.