Tokyo stocks opened slightly higher Thursday as the yen’s continued weakness supported buying of exporter issues. In the first 15 minutes of trading, the 225-issue Nikkei Stock Average rose 107.24 points, or 0.30 percent, from Wednesday to 35,584.99. The broader Topix index was up 8.14 points, or 0.33 percent, at 2,504.52. On the top-tier Prime Market, gainers were led by marine transportation, transportation equipment and rubber product issues. At 9 a.m., the U.S. dollar fetched 148.13-14 yen compared with 148.09-19 yen in New York and 147.87-88 yen in Tokyo at 5 p.m. Wednesday. The euro was …