US Patent 11753809 Flush toilet

A flush toilet according to an embodiment includes a bowl part, a rim part, a water spout port, a bottom surface wall, and an extension part. The bowl part receives waste. The rim part is formed on a top of the bowl part. The water spout port spouts a washing water along the rim part. The bottom surface wall is formed in such a manner that a height thereof increases from a side of the water spout port toward a front end of the rim part, and forms a passing water channel where the washing water flows. The extension part extends a water spout region for the washing water that is spouted from the water spout port.