Metal treatment – Stock – Chromium – molybdenum – or tungsten base
Reexamination Certificate
2005-09-26
2009-11-03
Wyszomierski, George (Department: 1793)
Metal treatment
Stock
Chromium, molybdenum, or tungsten base
C428S660000
Reexamination Certificate
active
07611591
ABSTRACT:
A structure which comprises tungsten as the main component and contains tungsten carbide, wherein the content of carbon is 0.1 mass % or higher based on the structure and the total content of cobalt, nickel, and iron is 3 mass % or lower based on the structure.
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German Office Action, w/ English translation thereof, issued in German Patent Application No. 11 2005 000 355.8-45 dated May 28, 2009.
Inazawa Shinji
Miyazaki Kenji
Nitta Koji
McDermott Will & Emery LLP
Roe Jessee R.
Sumitomo Electric Industries Ltd
Wyszomierski George
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