US 11,981,481 B2
Metal container comprising a UHF RFID tag
Lauri Huhtasalo, Tampere (FI); and Elham Moradi, Tampere (FI)
Assigned to Digital Tags Finland, OY, Tampere (FI)
Appl. No. 17/257,382
Filed by Digital Tags Finland, OY, Tampere (FI)
PCT Filed Jul. 2, 2019, PCT No. PCT/IB2019/055614
§ 371(c)(1), (2) Date Dec. 31, 2020,
PCT Pub. No. WO2020/008342, PCT Pub. Date Jan. 9, 2020.
Claims priority of application No. 1850828-3 (SE), filed on Jul. 2, 2018.
Prior Publication US 2021/0269205 A1, Sep. 2, 2021
Int. Cl. B65D 51/24 (2006.01); G06K 19/07 (2006.01); G06K 19/077 (2006.01); H01Q 1/22 (2006.01); H01Q 9/28 (2006.01); B65D 17/00 (2006.01)
CPC B65D 51/245 (2013.01) [G06K 19/0723 (2013.01); G06K 19/07786 (2013.01); G06K 19/0779 (2013.01); H01Q 1/2225 (2013.01); H01Q 9/285 (2013.01); B65D 17/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A substantially cylindrical, metal container comprising:
an envelope surface wall, a top end, and a bottom end, wherein the bottom end having a cavity which is formed by a circular concave, parabolic bottom surface and a circular surrounding edge, and,
an Ultra High Frequency (UHF) Radio Frequency Identification (RFID) tag, comprising an integrated circuit and an antenna, arranged at the bottom end, and,
wherein the antenna is located at a predetermined distance above a center of the circular concave, parabolic bottom surface, such that the circular concave, parabolic bottom surface reflects antenna radiation and thereby prolongs a read range of the antenna.