Toshiba Corp. said Wednesday it has resumed blocking Western Digital Corp.'s access to the databases of their joint chip venture after a U.S. appellate court allowed the action in a temporary order.

The decision by the California Court of Appeal in San Francisco came after the San Francisco County Superior Court ordered Toshiba last week to stop blocking Western Digital's access to chip development data, which the Japanese firm started in June. Toshiba appealed the superior court decision.

Reeling from massive losses linked to its now-bankrupt U.S. nuclear subsidiary, Toshiba is aiming to quickly sell the chip unit, Toshiba Memory Corp., to raise cash and avoid a stock market delisting.