uid crystal display deviceUS6058233Jun 30, 1998May 2, 2000Lucent Technologies Inc.Waveguide array with improved efficiency for wavelength routers and star couplers in integrated opticsUS6071323Mar 2, 1998Jun 6, 2000TdkcorporationGiven amount of rare earth element and transition metal element including at least one of iron, nickel and cobalt, homogeneous sintered structure; regenerating by pulveriz