Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Reexamination Certificate
2003-10-17
2009-08-25
Levy, Neil S. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
C252S187100, C252S187200, C422S028000, C424S405000, C424S409000, C424S661000, C510S103000, C510S445000, C510S446000, C514S389000
Reexamination Certificate
active
07579018
ABSTRACT:
Microbiological control is achieved by continuously and inexpensively dosing water in contact with biofilm, or that comes into contact with biofilm, using a highly effective biocide that provides very effective microbiocidal control of planktonic microorganisms and of biofilm species, even where the biofilm infestations have been in existence for long periods of time and thus have encased themselves in a substantial quantity of slimy defensive polysaccharide layers or films. In addition, the biocide used makes possible significant reduction in copper and/or iron surfaces in contact with the water as compared to N,N′-bromochloro- 5,5-dimethyl hydantoin. Still other advantages are made possible by the described technology.
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Howarth Jonathan N.
Nalepa Christopher J.
Sanders Michael J.
Shelton David L.
Albemarle Corporation
Hoefling Marcy
Levy Neil S.
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