The superconducting compound Bi(2223) is actually the only one which can be obtained in a multifilamentary configuration and in sufficient lengths for industrial applications. A brief review is given about the present status of the critical current densities of multifilamentary Bi(2223) tapes reported so far, being of the order of 30'000 A/cm² and above in the superconductor, the corresponding engineering (or overall) values approaching lO'O0O A/cm². A new deformation method leading to a more homogeneous current distribution in these tapes is presented: the fourroll technique (driven turks head), which yielded jc(77K,0T) values of 26'000 A/cm². A considerable lowering of the AC losses in multifilamentary Ag/Bi(2223) tapes has been obtained introducing higly resistive, very thin "oxide barriers" based on Ag/BaZrO₃ around each filament. First results are reported at this conference.