Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Reexamination Certificate
2005-01-11
2005-01-11
Hruskoci, Peter A. (Department: 1724)
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
C210S749000, C516S139000
Reexamination Certificate
active
06841089
ABSTRACT:
A method for reducing the toxicity of onium compounds, such as ammonium compounds and phosphonium compounds, by the use of certain additives is described. Suitable additives include, but are not necessarily limited to, carboxylic acids (e.g. naphthenic acids), sulfonic acids, organophosphonic acids, phenolic compounds, ether sulfates, phosphoric acid esters, sulfonated fatty acids, sulfated fatty acids, oligocarboxylic acids, and mixtures thereof, and alkali metal salts of these compounds and amine salts of these compounds.
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PCT ISA/EP Search Report for Application No. PCT/US02/39760, May 6, 2003.
Downs Hartley H.
Rivers Gordon T.
Baker Hughes Incorporated
Hruskoci Peter A.
Madan Mossman & Sriram P.C.
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