Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2006-04-18
2009-12-01
Gonzalez, Porfirio Nazario (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S081000
Reexamination Certificate
active
07626049
ABSTRACT:
Divalent germanium and tin compounds are provided. The divalent germanium and tin compounds have been found to be efficient catalysts for the formation of polyurethanes. Methods for making polyurethanes using the catalysts are also provided.
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Fish Brian M.
Ionkin Alex Sergey
Marshall William
E. I. du Pont de Nemours and Company
Gonzalez Porfirio Nazario
Tanzer Gail D.
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