A joint venture that would combine the mobile terminal businesses of three Japanese manufacturers has been stalled again by regulators.

NEC, Casio and Hitachi set a launch date of May 1 for the joint venture after it became clear that a regulatory review would not be completed in time for its original April 1 launch date.

The companies have now pushed that date out for a second time. They now expect to integrate Hitachi’s mobile terminal business with a slated NEC/Casio spin-off on June 1.

“Since the review by competition authorities in certain countries is still taking place, in consideration of the time required to prepare for a company integration, it has been judged that May 1 is a difficult target date for launching the integration,” said the companies in a press release posted on Casio’s Web site.

Casio and Hitachi currently run a joint venture that makes CDMA handsets for KDDI, SoftBank Mobile, Verizon Wireless and LG. Casio Hitachi Mobile Communications will merge its operations with a spin-off from Casio and NEC called NEC Casio Mobile Communications to create a company owned by all three corporations.