POLARCAP

Environmental Control Apparatus and 2 other

Owner

MEMBRANE TECHNOLOGY AND RESEARCH, INC.

—
POLARIS

Chemicals

Owner

MEMBRANE TECHNOLOGY AND RESEARCH, INC.

—
MTR

Computer and Scientific

Owner

MEMBRANE TECHNOLOGY AND RESEARCH, INC.

Jun 15, 1999
PERVAP

Environmental Control Apparatus

Owner

MEMBRANE TECHNOLOGY AND RESEARCH, INC.

Feb 1, 1994
VAPORSEP

Environmental Control Apparatus

Owner

MEMBRANE TECHNOLOGY AND RESEARCH, INC.

Feb 7, 1995