The fallout from the Aug. 1 tariff increase on beef has not yet reached the nation's largest "yakiniku" grilled-beef restaurant chains.

Reins International Inc., a Tokyo-based restaurant-chain operator, has kept the retail price of grilled beef at the same level as before the government's safeguard measures were introduced.

The government raised the tariff on fresh and chilled beef to 50 percent from 38.5 percent after a surge in beef imports in the April-June period.