Patent ID: 9418524
Filing Date: 2016-08-16
CPC Classification: G06K,G08B,H01P,Y10T

Claim Text:
1. A method of making a marker, comprising: obtaining a resonator material which has been annealed under a tensile force selected to provide a maximum resonant amplitude at a bias field H reducing a value of an operating bias field H forming a first housing portion from a first flexible material so as to have a planar shape; forming a second housing portion from a second flexible material of the same type as the first flexible material so as to comprise a cavity in which the resonator and bias materials of the marker can be housed when the second housing portion is coupled to the first housing portion, the cavity being defined by two opposing short sidewalls, two opposing elongate sidewalls and a bottom sidewall; and stiffening the two opposing elongate sidewalls such that crushing and bending thereof is made difficult by forming a plurality of first stiffener edge features along an exterior surface of each of the two opposing elongate sidewalls which partially define the cavity of the second housing portion.