Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Reexamination Certificate
2002-06-20
2009-06-09
Levy, Neil (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
C424S046000, C424S070100, C424S400000, C424S401000, C424S405000, C424S489000, C514S185000, C514S186000, C514S188000, C514S345000, C514S960000, C514S970000, C977S726000
Reexamination Certificate
active
07544367
ABSTRACT:
A method for producing a suspension, emulsion or dispersion of de-agglomerated particles (advantageously submicron-sized particles) of pyrithione salts comprising contacting agglomerated pyrithione salt particles with a de-agglomerating agent to produce the desired de-agglomerated pyrithione salt particles. Also disclosed is a method for making de-agglomerated submicron-sized particles of pyrithione salts comprision a heating step. Also disclosed are the particles made by the above methods and compositions comprising the particles and a base medium.
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Beaty David C.
Jardas John J.
Kaufman Charles W.
Mohseni Saeed M.
Polson George
Arch Chemicals Inc.
Carlson Dale L.
Levy Neil
Wiggin and Dana LLP
Wu Wanli
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