●NTT Science and Core Technology Laboratory Group
http://www.ntt.co.jp/sclab/index_e.html

●NTT Microsystem Integration Laboratories
http://www.ntt.co.jp/milab/en/

●NTT Photonics Laboratories
http://www.phlab.ecl.ntt.co.jp/eng/

●NTT Communication Science Laboratories
http://www.kecl.ntt.co.jp/rps/

●NTT Basic Research Laboratories
http://www.brl.ntt.co.jp/e/

●NTT Technology Licensing Site
http://www.ntt-tec.jp/en/