Intellectual Property Law

US Patent 7578997 - Metal ion modified nanoparticles for odor removal

This patent from Kimberly-Clark Worldwide teaches a variety of nanoparticle compositions useful for odor removal. Claim 1 reads:

1. A composition for neutralizing odor, comprising:

a nanoparticle comprising a diameter of less than 500 nanometers, a surface area of at least about 500 square meters/gram, and a first Zeta Potential of about ?1 to ?50 millivolts, the nanoparticle comprising silica, titanium dioxide, gold, zinc oxide, polystyrene, or combinations thereof; and

at least one metal ion adsorbed onto the nanoparticle, the at least one metal ion selected from the group consisting of a copper ion, a silver ion, a gold ion, and combinations thereof;

wherein at least one of the nanoparticle and the adsorbed metal ion is capable of binding at least one odorous compound.

Full post as published by TinytechIP on August 25, 2009 (boomark / email).