Ogawa Kenji
Ohsaki Rie
Ohtsuki Fumio
Okuda Minoru
Olsen Oliver Albert
Omet Reinhard
Optical Activity Ltd.
Optiguard, Inc.
Opto-Produkte AG
Orazio Svelto
Osawa Masaki
Owen Robert B.
Owen Theodore R.
Pade Ofer
Parker Adrian Roger
Pastwik Lawrence R.
Patch, Jr. Bradley J.
Perkinelmer LAS, Inc.
Petrohilos Harry G.
Pettersson Torulf