Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Reexamination Certificate
2005-09-15
2010-06-29
Johnson, Edward M (Department: 1793)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
C502S406000, C502S439000
Reexamination Certificate
active
07744841
ABSTRACT:
Finely divided ferrous carbonate absorbent, siderite granules or absorbent particles made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite, in combination with minor effective amounts of water or an optional binder, followed by drying, are used to treat and significantly reduce concentrations of hydrogen sulfide, carbonyl sulfide, organic disulfides, mercaptans and other sulfurous compounds and contaminants in gaseous and liquid fluid streams such as natural gas, light hydrocarbon streams, crude oil, acid gas mixtures, carbon dioxide gas and liquid streams, anaerobic gas, landfill gas, geothermal gases and liquids, and the like.
REFERENCES:
patent: 1882000 (1932-10-01), Cross
patent: 2433426 (1947-12-01), Capell et al.
patent: 4008775 (1977-02-01), Fox
patent: 4061716 (1977-12-01), McGauley
patent: 4344842 (1982-08-01), Fox
patent: 4366131 (1982-12-01), Fox
patent: 4376032 (1983-03-01), Givens
patent: 4476027 (1984-10-01), Fox
patent: 4705638 (1987-11-01), Ganczarczyk
patent: 4956160 (1990-09-01), Reichert
patent: 5378443 (1995-01-01), Engstrom et al.
patent: 5914292 (1999-06-01), Khare et al.
patent: 5948269 (1999-09-01), Stone
patent: 6096194 (2000-08-01), Tsybulevskiy et al.
patent: 6221241 (2001-04-01), Carnell et al.
patent: 6500237 (2002-12-01), Winchester et al.
patent: 914611 (1982-03-01), None
“H2S Scavenger Technologies,” GRI Report No. GRI-94/0197 by A.J. Foral & B.H. Al-Ubaidi, The M.W. Kellogg Co., for Gas Research Institute—Report Period Jun. 1 to Aug. 31, 1993.
“Desulfurization of Biogas Research & Possibilities for Greenspring,” by Arne Feldmeier & Christoph Hanrott for Bioway bv, undated.
Database WPI Week 198305 Thomson Scientific, London, GB; AN 1983-11512K, XP002564632.
Roberts, M.J., et al., “Pressurized fluidized-bed hydroretorting of Eastern oil shales—sulfur control. Topical report for Subtask 3.1, In-bed sulfur capture tests; Subtask 3.2, Electrostatic desulfurization; Subtask 3.3, Microbial desulfurization and denitrification” May 1, 1992 XP002564633 US DOI: 10.2172/10181821 Dept. of Energy—Office of Scientific and Technical Information, URL: http://dx.org/10.2172/10181821, p. 24, paragraph 3, p. 25, paragraph 5.
Johnson Edward M
Locke Lord Bissell & Liddell LLP
New Technology Ventures, Inc.
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