Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2008-11-19
2010-10-26
Griffin, Walter D (Department: 1797)
Mineral oils: processes and products
Refining
Sulfur removal
C208S20800M, C208S209000, C208S211000, C208S226000, C208S228000, C208S230000, C208S244000, C208S246000, C208S247000, C208S248000, C585S250000, C585S257000, C585S259000, C502S325000, C502S326000, C502S329000, C502S344000, C502S345000
Reexamination Certificate
active
07820037
ABSTRACT:
A desulfurizing agent is produced by mixing a copper compound, a zinc compound and an ammonium compound with an aqueous solution of an alkali substance to prepare or precipitate followed by calcitrating the resulting precipitate to form a calcined precipitate into a shape form of a copper oxide-zinc oxide-aluminum oxide mixture. The shaped form is impregnated with iron or nickel and calcined to produce a calcined oxide and reduced with hydrogen to form a sulfur-absorption desulfurizing agent.
REFERENCES:
patent: 3957962 (1976-05-01), Ramsbotham
patent: 4762817 (1988-08-01), Logsdon et al.
patent: 4876402 (1989-10-01), Logsdon et al.
patent: 4891462 (1990-01-01), McMahon
patent: 5302470 (1994-04-01), Okada et al.
patent: 5347021 (1994-09-01), Taylor et al.
patent: 5401391 (1995-03-01), Collins et al.
patent: 5482617 (1996-01-01), Collins et al.
patent: 5626742 (1997-05-01), Brons et al.
patent: 5635056 (1997-06-01), Brons et al.
patent: 5637735 (1997-06-01), Tong et al.
patent: 5685890 (1997-11-01), Okada et al.
patent: 5695632 (1997-12-01), Brons et al.
patent: 5800798 (1998-09-01), Ino et al.
patent: 5935421 (1999-08-01), Brons et al.
patent: 6042798 (2000-03-01), Masuda et al.
Masuda Masataka
Nagase Shin-ichi
Okada Osamu
Takami Susumu
Griffin Walter D
Nguyen Huy-Tram
Osaka Gas Company Limited
Stites & Harbison PLLC
Weyer Stephen J.
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