Method of treating a gas stream

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture

Reexamination Certificate

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Details

C423S24000R, C423S245100, C423S245200, C422S168000

Reexamination Certificate

active

07740815

ABSTRACT:
A method of treating a gas stream containing silane or other silicon-containing gas is described, in which the gas stream is conveyed to a liquid ring pump or screw-mechanism pump, to which are also supplied an oxidant for oxidising the silicon-containing gas within the pump, and a liquid for forming a liquid ring or intermittent flushing within the pump. A liquid stream containing said liquid and a by-product of the oxidation of the silicon-containing gas is exhaust from the pump.

REFERENCES:
patent: 5405445 (1995-04-01), Kumada et al.
patent: 5769626 (1998-06-01), Hauff et al.
patent: 6084148 (2000-07-01), Shiban et al.
patent: 2004/0219085 (2004-11-01), Ogawa
patent: 0 580 158 (1994-01-01), None
patent: 608237 (1948-09-01), None
Shimada Masao; abstract of JP 01293120, “Treatment of Waste Gas,” NEC Corporation; Nov. 27, 1989.
Hiai Atsuhiko, Wakimura Kazuo, Kitano Nobuhiro, Fujii Shigetaka; abstract of JP 61093310 A, “Disposal of Waste Gas,” Mitsui Toatsu Chemicals; May 12, 1986.
Takemori Toshinori, Yamada Yasuo, Kumagai Yasuo, Matsumoto Norikazu; abstract of JP 1266836 A, “Method for Removing Arsine and/or Phosphine,” Kyowa Kako, Furukawa Co Ltd; Oct. 24, 1989.
Takamatsu Kenichi, Nishiyama Tadashi, Iwamoto Masaya; abstract of JP 4310215 A, “Exhaust Gas Treating Device,” OKI ENG KK; Nov. 2, 1992.
United Kingdom Search Report of Application No. GB 0505852.4; Claims searched: 1-25; Date of search: Jul. 20, 2005.
PCT Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration of International Application No. PCT/GB2006/000879; Date of mailing: Jun. 6, 2006.
PCT International Search Report of International Application No. PCT/GB2006/000879; Date of mailing of the International Search Report: Jun. 6, 2006.
PCT Written Opinion of the International Searching Authority of International Application No. PCT/GB2006/000879; Date of mailing: Jun. 6, 2006.

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