Patent ID: 8231060

Claim:
A radio frequency identification device (RFID) for tires comprising: (a) a first sheet of non-conducting insulation material having a peripheral edge; (b) a semiconductor chip mounted on said first sheet spaced from said edge; (c) a second sheet of non-conducting insulation material overlying said semiconductor chip and having an annular portion sealingly engaged to said peripheral edge; and, (d) a wireless antenna operatively engaged to said semiconductor chip mounted on said first sheet or said second sheet, said antenna being electrically conducting ink with a thickness in the range of 0.0006 mm to 0.34 mm and having a formulation which includes 75% to 100% silver resin and up to 25% carbon/vinyl and a resistance in the range of 200 ohms to 300 ohms; said wireless antenna being located between said first and second sheets, all portions of said first and second sheets except those portions overlying said antenna and said semiconductor chip being sealed together.