O'Connor Brian M.
O'Neil James D.
O&K Orenstein & Kopel
Ogden Environmental Services
Oh Suk-in
Ohayon Jean-Claude
Ohi Kazuhiko
Ohishi Tsuyoshi
Ohlsen Ib
Oki Katsuya
Okochi Iwao
Omni Materials, Inc.
Ono Hidetaka
Organic Power ASA
Orita Norihiko
Otsuji Hiroyuki
Oudenhoven Hubertus Petrus Maria
Ovens David