Cleaning and liquid contact with solids – Processes – Miscellaneous
Reexamination Certificate
2006-05-30
2006-05-30
El-Arini, Zeinab (Department: 1746)
Cleaning and liquid contact with solids
Processes
Miscellaneous
C134S003000, C134S041000
Reexamination Certificate
active
07052557
ABSTRACT:
Filters used in the food and beverage industry can be cleaned by contacting the filters with a cyclic nitroxyl compound and a reoxidator or with a nitroxonium compound in a bromine-free process. The nitroxyl can be TEMPO or its 4-acetamido or 4-acetoxy derivative, and the nitroxonium compound can be the corresponding oxidized ion obtained by enzymatic or metal catalyzed oxidation. The reoxidator may be a peracid, such as peracetic acid, persulphuric acid or permanganic acid, or a metal complex with a hydroperoxide.
REFERENCES:
patent: 6274186 (2001-08-01), Mol et al.
patent: 6518419 (2003-02-01), Van Der Lugt et al.
patent: 19503060 (1996-08-01), None
patent: WO 99 15256 (1999-04-01), None
patent: WO0050388 (2000-08-01), None
Jetten Jan Matthijs
Van Der Lugt Jan Pieter
Van Doren Hendrik Arend
Van Wandelen Mario Tarcisius Raymundus
El-Arini Zeinab
Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk On
The Webb Law Firm
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