US Patent 7436309 Identifiable packaging

A packaging body is designed such that plate-shaped products can be stacked therein in a stacking direction. An antenna is fitted to the packaging body. The antenna is in the form of a coil having coil windings. The coil windings are flat along the packaging body. The coil through-opening surface is aligned at an angle of less than 90° with respect to the stacking direction. The coil windings, which surround the opening surface, extend along one or more packaging body surfaces, which run at an angle with respect to the opening surface.