IP Library › Granted Patent US 7,488,520
Granted Patent B2
US 7,488,520 · App. 10/687,004 · Granted Feb 10, 2009

High surface area material blends for odor reduction, articles utilizing such blends and methods of using same

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,488,520
App. No.
10/687,004
Granted
Feb 10, 2009
Kind
B2
Abstract

A package comprising a paper product, a packaging material that encloses the paper product and defines a headspace therebetween, and metal modified nanoparticles having an effective particle diameter of less than about 500 nanometers is provided. The metal modified nanoparticles are configured to neutralize gaseous or odorous compounds within the headspace.

Claims (24)

1. A package comprising:

a paper product;

a packaging material that encloses the paper product and defines a headspace therebetween;

metal modified nanoparticles having an effective particle diameter of less than about 500 nanometers, the nanoparticles are formed from silica, alumina, or a combination thereof, wherein the metal modified nanoparticles are configured to neutralize gaseous or odorous compounds within the headspace.

2. The package of claim 1 , wherein the packaging material defines an inside surface, the metal modified nanoparticles being positioned on the inside surface of the packaging material.

3. The package of claim 1 , wherein the metal modified nanoparticles are positioned on an insert located within the package.

4. The package of claim 3 , wherein the insert is attached to an inside surface of the packaging material.

5. The package of claim 3 , wherein the metal-modified nanoparticles cover greater than about 50% of a surface of the insert.

6. The package of claim 1 , wherein the nanoparticles are modified with a metal selected from the group consisting of copper, silver, gold, iron (II), iron (III), manganese, and combinations thereof.

7. The package of claim 1 , wherein the metal modified nanoparticles are copper-modified silica nanoparticles.

8. The package of claim 1 , wherein the metal modified nanoparticles have a surface area of at least about 200 square meters per gram.

9. The package of claim 1 , wherein the metal modified nanoparticles have a surface area of at least about 500 square meters per gram.

10. The package of claim 1 , further comprising unmodified nanoparticles blended with the metal modified nanoparticles.

11. The package of claim 1 , wherein the paper product is a tissue product.

12. The package of claim 1 , wherein the paper product is a paper towel.

13. The package of claim 1 , wherein the paper product includes a cylindrical core.

14. The package of claim 13 , wherein the metal modified nanoparticles are applied to the cylindrical core.

15. The package of claim 1 , wherein the nanoparticles have a negative Zeta Potential.

16. The package of claim 1 , wherein the nanoparticles have a positive Zeta Potential.

17. The package of claim 1 , wherein the nanoparticles are formed from alumina.

18. The package of claim 1 , wherein the nanoparticles are formed from alumina-coated silica.

19. The package of claim 1 , wherein the nanoparticles have an effective particle diameter of from about 1 to about 100 nanometers.

20. The package of claim 1 , wherein the packaging material is sealed.

21. The package of claim 1 , wherein the nanoparticles consist essentially of alumina, silica, or a combination thereof.

Assignments (1)
NAME CHANGE Recorded Feb 3, 2015
From: KIMBERLY-CLARK WORLDWIDE, INC.
To: KIMBERLY-CLARK WORLDWIDE, INC.
Reel/Frame 034880/0742 →