Liquid purification or separation – Filter – Material
Reexamination Certificate
2006-01-17
2006-01-17
Walker, W. L. (Department: 1723)
Liquid purification or separation
Filter
Material
C210S488000, C210S490000, C210S500100, C210S500240, C210S500410, C210S510100, C424S400000, C424S404000, C264S628000
Reexamination Certificate
active
06986429
ABSTRACT:
The invention concerns an anti-microbial porous part based on a polymeric material grafted at the surface and in its volume with ammonium motifs with anti-microbial and/or bactericidal and/or fungicide activity, preferably benzalkonium. The invention is characterized in that it has a porosity sufficiently high to enable a liquid with compatible viscosity to pass through its structure and sufficiently low to trap contaminating germs within said structure.
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patent: 5013459 (1991-05-01), Gettings et al.
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“Guidance for protecting Building Environments”, NIOSH publication May 19, 2005 <<http://www.cdc.gov
iosh/docs/2003-136/2003-136c.html#partair>>.
Database WPI; Section Ch, Week 199607; Derwent Publication Ltd., London, GB, AN 1996-064967; XP002157636 & JP07323206 A (Ebara Corp); Dec. 12, 1995.
Lacombes Jacques
Naji Mohammad
Pages Bernard
Laboratoire Chauvin S.A.
Menon Krishnan S.
Thomas John E.
Walker W. L.
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