Union Quimico-Farmaceutica S.A.

Union Rheinische Braunkohlen Kraftstoff Aktiengesellschaft

Uniroyal Chemical Company, Inc.

Uniroyal Chemical Ltd./ Uniroyal Chemical Ltee

Uniroyal Chemical Ltd./Lte.

Uniroyal Chemical Ltd./Ltee

Uniroyal Chemical LTD/LTEE

Unisearch Limited, A.C.N.

UniSyn Fibertec Corporation

United Carbide Chemicals & Plastics Technology Corporation

United States Government

United States of America as represented by the Librarian of Cong

United States Surgical Corp. a division of Tyco Healthcare Group

United Therapeutic Corporation

Unitex Chemical Corporation

Univ. College Cardiff Consultants

Univ. of Va. Alumni Patents Foundation

Univ. Vermont and State Agricultural College

Univation Technologies, LLC, (US)

Univera Pharmaceuticals, Inc.