Stainless steel and method of manufacturing the same
US10619950B2 · kind B2 · utility
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6References
12Claims
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Key dates
| Filing date | Apr 2, 2014 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Jan 25, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2530/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A stainless steel that includes chromium and other alloying element as a plurality of alloying elements including: a base material layer including chromium of a specified chromium content necessary for forming a passive film or more; and a superficial layer including chromium at a lower chromium content than the chromium content contained in the base material layer, and the superficial layer including the other alloying elements at a same content of the other alloying element as the content of the other alloying element contained in the base material layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.