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Hyundai Steel Company patents

Recent patent applications related to Hyundai Steel Company. Hyundai Steel Company is listed as an Agent/Assignee. Note: Hyundai Steel Company may have other listings under different names/spellings. We're not affiliated with Hyundai Steel Company, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hyundai Steel Company-related inventors

High strength spring steel having excellent corrosion resistance

Disclosed herein is a steel composition with improvement in tensile strength and fatigue life, which can be used for a vehicle part such as a vehicle suspension system.... Hyundai Steel Company

Pulverized coal for pig-iron making comprising cow manure, and pig-iron production method using same

The present invention discloses pulverized coal for iron making comprising cow manure and a method for producing pig iron using the same. The present invention has the advantage of making it possible to improve the combustion properties of pulverized coal and to increase the efficiency and safety of a blast-furnace... Hyundai Steel Company

Highly durable coil spring steel

Disclosed are a steel composition and a spring steel comprising the same. The steel composition comprises: an amount of about 0.51 to 0.57% by weight of carbon (C), an amount of about 1.35 to 1.45% by weight of silicon (Si), an amount of about 0.95 to 1.05% by weight of... Hyundai Steel Company

Ultra-high-strength spring steel

An ultra-high-strength spring steel, for use as a valve spring steel in a vehicle engine, includes 0.5 to 0.7% by weight of C, 1.2 to 1.5% by weight of Si, 0.6 to 1.2% by weight of Mn, 0.6 to 1.2% by weight of Cr, 0.1 to 0.5% by weight of... Hyundai Steel Company

Coil spring steel

a coil spring steel which includes: 0.4 to 0.9 wt % of carbon (C); 1.3 to 2.3 wt % of silicon (Si), 0.5 to 1.2 wt % of manganese (Mn); 0.1 to 0.5 wt % of molybdenum (Mo); 0.05 to 0.80 wt % of nickel (Ni); 0.05 to 0.50 wt... Hyundai Steel Company

Ultra high-strength spring steel

A steel composition is provided and includes carbon of about 0.5 to 0.7 wt %; silicon of about 1.3 to 2.3 wt %; manganese of about 0.6 to 1.2%; chromium of about 0.6 to 1.2 wt %; molybdenum of about 0.1 to 0.5 wt %; nickel of about 0.05 to... Hyundai Steel Company

Ultra-high-strength spring steel for valve spring

An ultra-high-strength spring steel for an engine valve spring steel comprises, by weight: 0.5-0.7% of carbon (C), 1.3-2.3% of silicon (Si), 0.6-1.2% of manganese (Mn), 0.6-1.2% of chrome (Cr), 0.1-0.5% of molybdenum (Mo), 0.05-0.8% of nickel (Ni), 0.05-0.5% of vanadium (V), 0.05-0.5% of niobium (Nb), 0.05-0.3% of titanium (Ti), 0.001-0.01%... Hyundai Steel Company

Method and forming coating layer with nano multi-layer

Disclosed is a method and apparatus for forming a coating layer using a physical vapor deposition apparatus equipped with a sputtering apparatus and an arc ion plating apparatus, comprising: a first coating step of forming a Mo coating layer on a base material using a the sputtering apparatus and a... Hyundai Steel Company

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Hyundai Steel Company in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Hyundai Steel Company with additional patents listed. Browse our Agent directory for other possible listings. Page by