Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Involving specified composition of heating atmosphere – other...
Reexamination Certificate
2006-05-05
2009-10-20
Lopez, Carlos (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Involving specified composition of heating atmosphere, other...
C264S676000, C096S011000
Reexamination Certificate
active
07604771
ABSTRACT:
A thermal method of making a hydrogen permeable composition is disclosed. A mixture of metal oxide powder and ceramic oxide powder and optionally a pore former is formed and pressed to form an article. The article is dried at elevated temperatures and then sintered in a reducing atmosphere to provide a dense hydrogen permeable portion near the surface of the sintered mixture. The dense hydrogen permeable portion has a higher initial concentration of metal than the remainder of the sintered mixture and is present in the range of from about 20 to about 80 percent by volume of the dense hydrogen permeable portion.
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Balachandran Uthamalingam
Chen Ling
Dorris Stephen E.
Lee Tae H.
Song Sun-Ju
Kemmerle, III Russell J
Lopez Carlos
Olson & Cepuritis, Ltd.
UChicago Argonne LLC
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