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U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2004 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 095, Gas Separation: Processes

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant
First-Named Assignee 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Total
~Individually Owned Patent 10 15 11 16 29 24 23 17 22 11 11 24 22 10 21 18 15 14 19 23 24 21 19 27 19 13 14 16 21 23 28 14 28 27 22 17 688
AIR PRODUCTS AND CHEMICALS, INC. 1 1 0 0 0 0 1 2 2 1 2 3 2 1 2 5 4 1 8 13 9 10 15 7 12 8 9 15 4 15 8 8 6 9 17 6 207
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 0 0 1 3 2 2 1 0 1 0 1 0 0 0 0 0 2 1 0 1 1 2 1 5 5 4 5 7 4 8 11 11 22 14 8 5 128
PRAXAIR TECHNOLOGY, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 4 7 7 5 5 14 13 9 8 11 10 7 103
UNION CARBIDE CORPORATION 2 3 1 4 5 2 3 4 4 3 3 4 6 6 6 6 2 4 7 9 10 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 96
BOC GROUP, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 1 0 6 6 0 2 9 4 7 8 7 7 13 5 0 80
UOP 1 1 0 1 2 1 1 0 2 2 1 1 0 0 0 0 3 2 0 2 4 3 7 5 4 3 5 6 5 0 1 6 5 2 2 1 79
LINDE AKTIENGESELLSCHAFT 0 0 1 2 0 2 2 2 4 1 0 0 7 8 4 2 5 5 8 6 3 0 1 0 0 0 1 1 1 0 0 1 1 0 0 0 68
DOW CHEMICAL COMPANY 0 1 2 0 0 3 1 1 1 2 0 2 1 1 2 1 2 1 3 5 8 6 5 6 5 2 0 0 2 0 1 0 0 0 0 0 64
PHILLIPS PETROLEUM COMPANY 4 6 5 4 2 2 2 3 2 1 2 3 1 3 3 2 4 2 2 3 0 1 1 0 2 1 1 0 0 1 0 0 0 0 0 0 63
MEMBRANE TECHNOLOGY & RESEARCH, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 3 2 4 4 3 2 5 4 3 9 4 2 0 3 9 0 58
METALLGESELLSCHAFT AKTIENGESELLSCHAFT 1 4 2 0 2 1 2 2 3 2 2 2 1 1 3 0 1 1 4 1 6 0 1 6 1 0 1 1 1 0 1 1 0 2 0 0 56
SHELL OIL COMPANY 1 2 0 1 3 0 3 1 2 1 0 0 0 2 2 4 3 3 2 4 3 1 0 1 1 1 0 0 0 0 0 2 2 0 2 1 48
E. I. DU PONT DE NEMOURS AND COMPANY 1 2 1 1 1 2 1 0 2 1 0 0 0 0 0 0 0 0 1 2 3 3 8 0 4 3 1 0 0 0 3 3 1 0 1 1 46
DONALDSON COMPANY, INC. 0 0 0 0 0 0 1 0 0 0 0 1 1 2 0 0 0 0 0 1 1 0 0 1 0 1 2 0 2 0 3 6 2 8 5 7 44
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 1 2 1 0 1 1 4 4 2 4 0 0 3 0 0 1 0 0 1 1 0 1 0 3 1 1 0 0 1 0 2 0 1 0 3 1 40
MONSANTO COMPANY, INC. 3 2 1 0 2 0 0 0 0 2 1 5 3 1 0 4 2 2 1 0 1 0 1 0 0 0 0 0 1 2 0 1 0 0 0 0 35
ALLIED-SIGNAL INC. 1 2 1 2 0 3 1 0 0 1 0 0 0 1 0 1 0 0 0 3 4 1 1 2 1 1 0 0 0 3 2 0 0 0 0 1 32
EXXON RESEARCH + ENGINEERING CO. 1 0 1 2 0 0 0 1 1 1 0 1 5 4 1 3 0 1 1 0 1 0 2 0 0 1 0 1 1 0 0 1 0 0 0 0 30
ADVANCED TECHNOLOGY MATERIALS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 0 0 0 0 1 1 3 2 4 1 4 6 4 29
INSTITUT FRANCAIS DU PETROLE 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 4 2 0 0 0 1 0 0 5 4 2 4 0 3 2 29
GENERAL ELECTRIC COMPANY 2 1 2 1 2 0 0 3 0 1 1 3 0 4 1 0 0 2 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 2 0 1 28
CONOCO, INC. 6 4 1 2 4 1 0 0 1 2 0 0 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 27
TEXACO INC. 0 0 1 1 2 1 0 0 1 0 0 0 0 2 0 0 0 0 1 0 2 2 1 2 3 1 0 0 0 2 2 1 0 1 1 0 27
BAYER AKTIENGESELLSCHAFT 0 0 0 2 2 1 0 0 3 1 2 1 0 1 0 1 1 1 0 0 1 1 2 1 0 1 0 0 1 0 2 0 0 0 1 0 26
BASF AKTIENGESELLSCHAFT 2 2 2 0 0 0 0 0 1 1 1 0 2 1 1 0 2 1 1 0 0 0 1 0 0 1 0 0 0 1 0 0 1 2 0 1 24
THE BOC GROUP PLC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 2 1 0 3 0 2 3 2 1 7 0 0 0 1 0 24
PALL CORPORATION 1 1 0 0 0 0 0 0 0 1 0 2 0 3 0 0 1 2 1 0 1 1 1 1 1 1 2 0 0 0 0 0 0 1 2 0 23
BERGWERKSVERBAND GMBH 0 0 0 0 1 1 0 1 4 0 0 0 1 0 3 2 1 3 0 1 0 0 0 3 0 1 0 0 0 0 0 0 0 0 0 0 22
HOECHST AKTIENGESELLSCHAFT 0 0 3 0 2 0 1 0 1 0 2 0 2 1 0 1 0 0 1 0 0 1 1 0 0 1 1 0 2 1 1 0 0 0 0 0 22
MOBIL OIL CORP. 0 0 2 3 1 1 1 1 0 0 0 0 0 0 0 1 1 0 1 1 2 1 0 0 1 0 0 0 1 0 0 2 2 0 0 0 22
ELECTRIC POWER RESEARCH INSTITUTE, INC. 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 1 0 0 0 1 0 2 1 1 0 0 1 0 1 2 1 1 1 2 3 21
NALCO CHEMICAL COMPANY 0 0 0 1 0 0 0 1 1 1 3 1 0 1 2 1 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 19
BEND RESEARCH INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 1 0 1 2 3 0 1 0 2 2 0 1 0 0 0 0 17
BATTELLE MEMORIAL INSTITUTE 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 1 1 1 0 7 2 16
ENGELHARD CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 2 2 4 4 0 16
HEWLETT-PACKARD COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 2 0 0 3 1 1 0 2 1 0 1 0 0 16
BABCOCK & WILCOX COMPANY 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 1 3 1 1 2 0 0 2 0 0 1 14
CHEVRON RESEARCH & TECHNOLOGY CO. 1 0 0 0 1 1 0 1 1 0 0 0 1 2 1 0 1 1 0 0 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 14
IMPERIAL CHEMICAL INDUSTRIES PLC 0 1 2 1 2 1 0 0 0 0 0 0 0 0 0 0 0 1 1 2 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 14
SIEMENS AKTIENGESELLSCHAFT 1 1 0 1 0 1 0 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 1 1 0 0 1 14
3M INNOVATIVE PROPERTIES COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 4 4 1 2 13
AMERICAN AIR LIQUIDE, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 3 1 2 3 0 2 13
GAS RESEARCH INSTITUTE 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 3 2 0 1 2 0 2 0 1 0 0 13
MITSUBISHI JUKOGYO KABUSHIKI KAISHA 1 0 0 0 0 0 0 0 2 1 0 0 0 0 1 1 0 0 0 0 2 0 2 0 0 0 0 0 2 0 1 0 0 0 0 0 13
HITACHI, LTD 2 0 0 0 1 1 1 1 0 1 0 0 0 1 0 0 0 0 1 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 12
UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 4 1 0 0 0 0 0 0 0 0 0 0 0 12
W. R. GRACE & CO.-CONN. 0 2 1 0 0 0 2 1 1 1 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 12
AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 0 0 0 1 0 0 3 0 0 0 2 2 0 0 11
INGERSOLL-RAND COMPANY 0 0 2 1 1 1 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 10
NIPPON SANSO K.K. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 1 1 2 3 10
UNITED TECHNOLOGIES CORPORATION 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 2 0 0 1 0 0 0 1 1 0 0 10
WESTINGHOUSE ELECTRIC CORP. 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 4 2 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 10
COMBUSTION ENGINEERING INC. 0 1 0 0 0 0 1 2 0 0 1 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
FMC CORPORATION 0 0 0 0 0 1 0 0 0 0 0 0 0 2 0 0 0 1 0 2 0 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0 9
LITTON SYSTEMS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 2 1 2 9
SAMSUNG ELECTRONICS CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 0 0 1 2 9
STANDARD OIL COMPANY 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 1 2 1 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 9
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 1 2 0 1 1 9
UNITED STATES OF AMERICA, NAVY 0 0 1 1 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 1 0 9
A. AHLSTROM CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 2 1 1 1 0 0 0 0 0 0 0 0 8
AB SVENSKA FLAKTFABRIKEN 2 0 0 0 0 0 1 0 1 0 0 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
ALCOA INC. 0 1 0 0 1 0 0 2 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 8
ATLANTIC RICHFIELD COMPANY 1 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 8
CIBA-GEIGY CORPORATION 0 1 2 0 0 0 1 0 0 0 0 0 2 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
FLAKT AB 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 1 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
FUJI PHOTO FILM CO., LTD 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 1 1 1 0 8
INSTITUTE OF GAS TECHNOLOGY 0 0 0 0 0 1 0 0 1 0 0 0 1 1 1 0 1 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH 0 0 0 0 0 0 0 0 0 0 0 1 2 0 1 0 1 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
KOPPERS COMPANY INC. 1 1 2 1 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
NORDSON CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2 0 0 2 1 0 1 0 0 0 1 0 8
PERMEA INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 2 1 0 0 1 0 0 0 0 0 0 0 8
RESEARCH-COTTRELL, INC. 0 1 2 2 0 0 0 0 0 0 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
ROHM AND HAAS COMPANY 0 0 0 0 1 2 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 8
STANDARD OIL CORPORATION (INDIANA) 0 0 0 0 0 4 1 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
TELLER ENVIRONMENTAL SYSTEMS, INC. 0 0 0 0 1 2 0 1 1 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 2 1 1 8
AMOCO CORPORATION 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 7
BENDIX COMMERCIAL VEHICLE SYSTEMS LLC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 5 7
BOC LIMITED 0 0 0 0 0 0 0 0 0 1 3 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
CALGON CARBON CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 7
CALGON CORPORATION 0 0 0 0 1 0 0 1 0 2 0 0 0 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
CARLO ERBA S.P.A, 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 1 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 7
COMMISSARIAT A L'ENERGIE ATOMIQUE 1 0 1 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 7
EASTMAN KODAK COMPANY 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 2 0 7
F. L. SMIDTH & CO. A/S 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 3 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
GAF CHEMICALS CORPORATION 0 0 0 0 6 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
JOHN ZINK COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 1 3 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 7
LUMMUS COMPANY 0 0 0 1 0 2 0 1 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
NITROTEC CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 1 2 1 0 0 0 0 0 7
TAKEDA CHEMICAL INDUSTRIES LTD. 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 1 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 7
UBE INDUSTRIES LTD. 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 1 2 0 0 7
UNITED STATES OF AMERICA, ENVIRONMENTAL PROTECTION AGENCY 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 1 0 2 0 0 0 0 7
VBM CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 1 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 7
ABB FLAKT AB 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 0 1 0 0 0 0 6
BASF CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 0 0 1 0 0 6
BAXTER INTERNATIONAL INC. 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 6
CORNING INCORPORATED 2 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 6
ENVIROCARE INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 1 0 0 1 0 1 6
EUROPEAN ATOMIC ENERGY COMMUNITY EURATOM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 6
JAPAN PIONICS CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 2 2 0 0 6
MATHESON TRI-GAS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 3 6
MITSUBISHI HEAVY INDUSTRIES, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 1 2 6
NIPPON STEEL CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 6
NITTO DENKO CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 0 0 1 6
RHONE-POULENC S.A. 2 0 1 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
SAES PURE GAS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 0 1 1 0 1 6
SEITETSU KAGAKU CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 6
SUMITOMO SEIKA CHEMICALS CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 1 0 1 0 0 0 0 1 0 6
TOSOH CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 1 2 0 6
UNIVERSITY OF TEXAS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 1 6
ABCOR, INC. 1 2 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
AIRSEP CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 1 1 0 0 0 0 0 0 1 0 5
AMERICAN AIR FILTER COMPANY, INC. 0 1 0 0 1 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ANDREW CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 1 5
ASAHI GLASS COMPANY, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 1 0 1 0 0 0 0 0 0 0 5
BETZ LABORATORIES INC. 0 0 0 0 0 0 2 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 5
BOLIDEN AKTIEBOLAG 0 0 0 0 0 1 2 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
CALIFORNIA INSTITUTE OF TECHNOLOGY 0 0 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 5
DOW CORNING CORPORATION 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 0 0 5
DUPONT CANADA INC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 0 0 0 0 0 0 0 0 0 0 5
EBARA RESEARCH CO. LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 1 0 1 5
FLUOR CORPORATION 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 5
G.B.D. CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 5
GKSS-FORSCHUNGSZENTRUM GEESTHACHT GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 1 0 0 0 1 1 0 0 0 5
GULF RESEARCH AND DEVELOPMENT COMPANY 0 0 0 0 0 4 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
KERNFORSCHUNGSANLAGE JULICH GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
KRUPP KOPPERS GMBH 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 5
L'AIR LIQUIDE, S.A. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 2 0 0 0 0 0 0 0 5
MALONEY-CRAWFORD TANK CORPORATION 0 1 0 2 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
MIDWEST RESEARCH INSTITUTE 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 0 5
MINNESOTA MINING AND MANUFACTURING COMPANY 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 5
NGK INSULATORS LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 1 0 5
OLIN CORPORATION 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 5
PPG INDUSTRIES INC. 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ROCKWELL INTERNATIONAL CORPORATION 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 5
SNAM PROGETTI S.P.A. 1 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
SOCIETE NATIONALE ELF AQUITAINE (PROD.) 0 0 0 0 0 0 0 0 1 0 2 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TOKYO ELECTRON LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 1 5
TOSHIBA CORPORATION 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 5
UNITED STATES OF AMERICA, DEPARTMENT OF THE INTERIOR 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 5
UNITED STATES OF AMERICA, NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 0 0 1 1 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
WAHLCO, INC 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 0 0 0 0 0 0 0 5
WESTVACO CORPORATION 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 5
WILHELM ENVIRONMENTAL TECHNOLOGIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 1 0 0 0 0 0 0 0 5


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