Robert D'Arrigo

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Bridgeville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Preheating cold blast air of a blast furnace for tempering the hot...
- Patent number 7,232,542
- Issue date Jun 19, 2007
- Aker Kvaerner Metals, Inc.
- Michael Friedrich
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Preheating cold blast air of a blast furnace for tempering the hot...
- Publication number 20040222574
- Publication date Nov 11, 2004
- Michael Friedrich
- C21 - METALLURGY OF IRON