Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2005-05-24
2005-05-24
Kumar, Shailendra (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C424S009452
Reexamination Certificate
active
06897339
ABSTRACT:
Purification process of iohexol comprising the treatment of said product with 1-methoxy-2-propanol either alone or mixed with other solvents.
REFERENCES:
patent: 4250113 (1981-02-01), Nordal et al.
patent: 5204086 (1993-04-01), Wille
patent: WO 98 08804 (1998-03-01), None
patent: 0 919 540 (1999-06-01), None
Aromatario Valentina
Massardo Pietro
Turchetta Stefano
Chemi S.p.A.
Clark & Elbing LLP
Kumar Shailendra
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