Tokyo stocks rose Friday with tech issues lifted by optimism in the U.S. economy, while a wait-and-see mood prevailed before remarks from the Bank of Japan governor that may offer clues on the timing of future interest rate hikes. The 225-issue Nikkei Stock Average ended up 568.58 points, or 1.53 percent, from Thursday at 37,723.91. The broader Topix index finished 25.48 points, or 0.97 percent, higher at 2,642.35. On the top-tier Prime Market, gainers were led by oil and coal product, bank and rubber product issues. The U.S. dollar briefly weakened to the upper 141 yen level in Tokyo on selli…