BOPI 04 BR/2023 REPERTOIRE NUMERIQUE 35 (11) 20916 (51) G01N 21/33 (2018.01); G01N 21/3581 (2018.01); G07D 7/004 (2018.01); G07D 7/1205 (2018.01); G07D 7/202 (2018.01) (21) 1202200417 - PCT/US2021/027287 (22) 14/04/2021 (30) US n° 16/848,930 du 15/04/2020 (54) Machine-readable polymer security threads. (72) LAWANDY, Nabil (US) (73) SPECTRA SYSTEMS CORPORATION, 40 Westminster Street, 2nd Floor, PROVIDENCE, RI 02903 (US) (74) S.C.P AKKUM, AKKUM & Associates, No. 1777, rue 6.261, Yaoundé, Auditorium Jean Paul II, Quartier Mbankolo, B.P. 4966, YAOUNDE (CM). (57) A method and associated system for authentication, including irradiating an item including a polymer security thread including a polymer material and a doping material within the polymer material and configured to produce a radiation spectrum in response to the irradiating, the doping material capable of absorbing, scattering, or emitting radiation, and detecting the produced radiation spectrum to confirm the presence of the polymer security thread. Fig. 1 Consulter le mémoire ________________________________________ (11) 20917 (51) B02C 15/00 (2018.01) (21) 1202200418 PCT/EP2020/060674 (22) 16/04/2020 (54) Key milling plate segment, milling plate segment system, and method for same. (72) BETTENWORTH,Jörg (DE) et KEYSSNER, Michael (DE) (73) LOESCHE GMBH, Hansaallee 243 40549 DÜSSELDORF (DE) (74) AFRIC'INTEL CONSULTING, Essos, Immeuble MAH DONG Véronique, 2e étage B.P. 8451, YAOUNDE (CM). (57) The invention relates to a replaceable key milling plate segment for a milling path of a milling plate of a rolling mill, the milling path having a ring-like shape with an outer circumference and an inner circumference around a center. The length of the key milling plate segment inner edge lying closer to the center is greater than the length of the outer edge lying remotely from the center. The invention also relates to a milling plate segment system, a rolling mill, and a method for replacing milling plate segments.
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