A non-skid surface for containers having a generally planar base layer with an upper surface, a lower surface, and a surface area. A plurality of bumps are disposed spaced apart over and projecting upward relative to the upper surface over a substantial portion of the surface area of the base layer....http://www.google.sh/patents/US6703110?utm_source=gb-gplus-sharePatent US6703110 - Non-skid surface for containers
