Anticor Chemie S.a.
Antonietti Markus
Aoki Kaoru
Aoki Yutaka
Apollo Environmental Systems Ltd.
Apollo Technologies
Applied Research Associates Inc.
Applied Silicate Technologies Limited
Aradi Allen A.
Araki Yasuhiro
Aravanis Alex
Arbaflame Technology As
Arimoto Kunio
Arizona Chemical
Armitage Phillip
Armitage Phillip D.
Arnold Vladimir
Arquette Robert E.
Arters David C.
Arthur H. Fleming