US Patent 8211369 - Odor reduction using metal modified nanoparticles

http://www.freepatentsonline.com/8211369.html

This is a fairly broad patent from Kimberly-Clark Worldwide for using the large surface area-to-volume ratio of silica or alumina nanoparticles to remove odors produced by plastic packaging materials. Claim 1 reads:

1. A method for neutralizing odor contained within the headspace of a product packaging comprising the steps of:

a) formulating a blend comprising metal modified nanoparticles, wherein the metal modified nanoparticles are formed from silica, alumina, or a combination thereof;

b) applying the blend to the inside of a product packaging.