Sadayuki Nakamura
27Patents
8h-index
53Co-inventors
78Inventor score
Filing activity: Sep 13, 1978 → Aug 10, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5595613A | Steel for gear, gear superior in strength of tooth surface and method for producing same | Chemistry; Metallurgy | 18 | Expired |
| US4279646A | Free cutting steel containing sulfide inclusion particles with controlled aspect, size and distribution | Chemistry; Metallurgy | 18 | Expired |
| US5302214A | Heat resisting ferritic stainless steel excellent in low temperature toughness, weldability and heat resistance | Chemistry; Metallurgy | 17 | Expired |
| US4810465A | Free-cutting Ti alloy | Chemistry; Metallurgy | 17 | Expired |
| US4434006A | Free cutting steel containing controlled inclusions and the method of making the same | Chemistry; Metallurgy | 16 | Expired |
| US6582532B1 | Steel for large bearing and parts for large bearing | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5279688A | Steel shaft material which is capable of being directly cut and induction hardened and a method for manufacturing the same | Chemistry; Metallurgy | 11 | Expired |
| US4806304A | Free cutting steel | Chemistry; Metallurgy | 10 | Expired |
| US4849166A | High strength stainless steel | Chemistry; Metallurgy | 7 | Expired |
| US5861068A | Method of using stainless steel having anti-microbial property | Chemistry; Metallurgy | 6 | Expired |
| US6569267B1 | High bearing pressure-resistant member | Chemistry; Metallurgy | 6 | Expired |
| US5733388A | Steel composition for bearings and method of producing the same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4326886A | Steel for cold forging having good machinability and the method of making the same | Chemistry; Metallurgy | 4 | Expired |
| US5102479A | High strength non-heat refining free cutting steels | Chemistry; Metallurgy | 4 | Expired |
| US4219356A | Machinable ferritic stainless steels | Chemistry; Metallurgy | 3 | Expired |
| US6203630A | Steel for induction quenching and machinery structural parts using the same | Chemistry; Metallurgy | 2 | Expired |
| US9932650B2 | Ferritic stainless steel material for brazing and heat exchanger member | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US6808571B2 | Heat resistant carburized rolling bearing component and manufacturing method thereof | Chemistry; Metallurgy | 2 | Expired |
| US8206091B2 | Exhaust guide member of nozzle vane-type turbocharger | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US4270950A | Machinable ferrite stainless steels | Chemistry; Metallurgy | 1 | Expired |
| US7670444B2 | Non-heat treated steel for hot forging with easy fracture splitting | Chemistry; Metallurgy | 0 | Expired |
| US6316117A | Stainless steel sheet having Cu-enriched grains dispersed in its matrix and/or a Cu-condensed layer | Emerging Cross-Sectional Technologies | 0 | Expired |
| US10125404B2 | Method for producing high elastic limit nonmagnetic steel material using an austenitic stainless steel sheet | Chemistry; Metallurgy | 0 | Active |
| US10371261B2 | Martensitic stainless-steel sheet and metal gasket | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10060003B2 | Austenitic stainless steel sheet and metal gasket | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.