1. AJAX

Serial Number: 76439584
Owner: (REGISTRANT) Westvaco Corporation CORPORATION DELAWARE One High Ridge Park Stamford CONNECTICUT 06905
Filed on: 08/09/2002

2. AQUAGUARD

Serial Number: 76411039
Owner: (REGISTRANT) Westvaco Corporation CORPORATION DELAWARE One High Ridge Park Stamford CONNECTICUT 06905

(LAST LISTED OWNER) MEADWESTVACO CORPORATION CORPORATION DELAWARE 501 South 5th St. Law Dept. Richmond VIRGINIA 232190501

Filed on: 05/23/2002

3. MORTAR PLAS

Serial Number: 76474126
Owner: (REGISTRANT) Westvaco Corporation CORPORATION DELAWARE One High Ridge Park Stamford CONNECTICUT 06905

(LAST LISTED OWNER) MeadWestvaco Corporation CORPORATION DELAWARE 501 South 5th St. Law Dept. Richmond VIRGINIA 232190501

Filed on: 12/05/2002

4. ULTRASORB

Serial Number: 76378067
Owner: (REGISTRANT) Westvaco Corporation CORPORATION DELAWARE One High Ridge Park Stamford CONNECTICUT 06905

(LAST LISTED OWNER) P. H. GLATFELTER COMPANY CORPORATION PENNSYLVANIA 96 SOUTH GEORGE STREET SUITE 500 YORK PENNSYLVANIA 17401

Filed on: 03/06/2002

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