Roberts Pharmaceutical Corp. said that its shareholders have approved a previouslyannounced equity investment agreement with Yamanouchi Pharmaceutical Co. Ltd.

A U.S. subsidiary of the Tokyo company will buy 4 million newly issued shares ofRoberts common stock (NASDAQ:RPCX) for $23.84 per share, for a total of $95.4 million.

The purchase will increase the number of shares of Roberts stock outstanding to 13.8million and give Yamanouchi a 29 percent stake in the Eatontown , N.J., company.