Ammunition and explosives – Cartridges – Projectile structure
Reexamination Certificate
2008-06-10
2008-06-10
King, Roy (Department: 1793)
Ammunition and explosives
Cartridges
Projectile structure
C075S255000, C075S246000, C075S248000
Reexamination Certificate
active
07383776
ABSTRACT:
Systems and methods for refining or otherwise processing tungsten alloys, including ferrotungsten powder and articles formed therefrom, and methods for detecting the presence of the same. The methods include at least one of magnetically-separating and particle-size-separating ferrotungsten or ferrotungsten-containing powder. In some embodiments, powder may be separated to remove fine particles, and optionally to separate the remaining particles into fractions containing selected particle size distributions. The powder additionally or alternatively may be separated into at least magnetic and non-magnetic fractions. In some embodiments, portions of two or more size and/or magnetism fractions are mixed to provide a ferrotungsten-containing feedstock. Selected fractions resulting from the size and magnetism separation steps may be utilized to provide a ferrotungsten-containing feedstock from which articles are produced and which may include additional components.
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Dascenzo Intellectual Property Law, P.C.
King Roy
Zhu Weiping
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