FRANKFURT (Reuters) - Aixtron said it had not received a ruling from U.S. President Barack Obama about whether a takeover by China's Fujian Grand Chip Investment Fund (FGC) could proceed, clouding the troubled German chip maker's outlook.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=aDddvCN4Kpg:ymHM5P6bDFw:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=aDddvCN4Kpg:ymHM5P6bDFw:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=aDddvCN4Kpg:ymHM5P6bDFw:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=aDddvCN4Kpg:ymHM5P6bDFw:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=aDddvCN4Kpg:ymHM5P6bDFw:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/aDddvCN4Kpg" height="1" width="1" alt="" />