Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2006-10-17
2006-10-17
Nazario-Gonzalez, Porfirio (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S056000
Reexamination Certificate
active
07122690
ABSTRACT:
Metal complexes of titanium and zirconium with N,N-bis(2-hydroxyethyl)glycine are provided, and more particularly to an improved process to prepare the titanium and zirconium complexes of N,N-bis(2-hydroxyethyl)glycine. Such complexes are used in oil well fracturing and plugging applications.
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E. I. du Pont de Nemours and Company
Nazario-Gonzalez Porfirio
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