Nguyen Jean-Paul
Niitsuma H.
Nikolakis-Mouchas Christos
Nosaka Masao
Nouder William
Novosed Stephen J.
O'Hanlon Tom
Oehler Harris A
Oi Hisaichi
Ostkamper Michael
Palm Helmut
Papanyan Valeri
Patent Technologies, LLC
Patton Consulting Inc.
Peacock Ronald E.
Peev Stoyko P.
Peltier Bertrand
Pestman Barend Jan
Petro-Data C.A.
Petroleum Geo-Services (US), Inc