~Individually Owned Patent |
310 |
245 |
206 |
208 |
204 |
1173 |
BAXTER INTERNATIONAL INC. |
13 |
10 |
7 |
5 |
6 |
41 |
PALL CORPORATION |
9 |
9 |
2 |
8 |
9 |
37 |
ZENON ENVIRONMENTAL INC. |
8 |
6 |
7 |
7 |
9 |
37 |
U.S. FILTER CORPORATION |
6 |
13 |
5 |
7 |
3 |
34 |
FILTERWERK MANN + HUMMEL GMBH |
3 |
3 |
11 |
4 |
5 |
26 |
DANA CORPORATION |
8 |
5 |
3 |
6 |
2 |
24 |
FLEETGUARD, INC. |
5 |
2 |
11 |
2 |
4 |
24 |
CUNO INC. |
4 |
3 |
2 |
5 |
7 |
21 |
TRANSGENOMIC INCORPORATED |
4 |
11 |
6 |
0 |
0 |
21 |
INSTITUT FRANCAIS DU PETROLE |
7 |
6 |
3 |
3 |
0 |
19 |
MILLIPORE CORPORATION |
3 |
2 |
0 |
8 |
6 |
19 |
SARTORIUS AG |
6 |
4 |
4 |
0 |
5 |
19 |
ARCHIMEDES TECHNOLOGY GROUP, INC. |
8 |
0 |
3 |
7 |
0 |
18 |
NITTO DENKO CORPORATION |
3 |
5 |
3 |
4 |
3 |
18 |
PARKER-HANNIFIN CORPORATION |
7 |
2 |
3 |
3 |
3 |
18 |
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) |
5 |
5 |
3 |
3 |
2 |
18 |
UNIVERSITY OF CALIFORNIA, THE REGENTS OF |
0 |
6 |
3 |
3 |
6 |
18 |
NALCO CHEMICAL COMPANY |
13 |
4 |
0 |
0 |
0 |
17 |
GENERAL ELECTRIC COMPANY |
4 |
4 |
2 |
3 |
3 |
16 |
WATERS INVESTMENTS LIMITED |
3 |
4 |
4 |
5 |
0 |
16 |
MYKROLIS CORPORATION |
1 |
3 |
6 |
2 |
3 |
15 |
OUTOKUMPU OYJ |
2 |
1 |
3 |
4 |
5 |
15 |
TORAY INDUSTRIES INC. |
4 |
5 |
4 |
1 |
1 |
15 |
ARVIN TECHNOLOGIES, INC. |
0 |
1 |
2 |
6 |
5 |
14 |
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH |
2 |
3 |
2 |
5 |
2 |
14 |
SYMYX TECHNOLOGIES, INC. |
1 |
8 |
0 |
3 |
2 |
14 |
ACCESS BUSINESS GROUP INTERNATIONAL LLC |
0 |
1 |
4 |
7 |
1 |
13 |
DAICEL CHEMICAL INDUSTRIES LTD. |
4 |
3 |
4 |
1 |
1 |
13 |
ORGANO CORPORATION |
4 |
6 |
1 |
0 |
2 |
13 |
AMERSHAM BIOSCIENCES AB |
0 |
0 |
5 |
4 |
3 |
12 |
EASTMAN KODAK COMPANY |
3 |
2 |
3 |
4 |
0 |
12 |
HYDROTREAT, INC. |
1 |
0 |
2 |
6 |
3 |
12 |
KURITA WATER INDUSTRIES LTD. |
2 |
4 |
3 |
1 |
2 |
12 |
SHELL OIL COMPANY |
1 |
2 |
2 |
5 |
2 |
12 |
STANADYNE CORPORATION |
0 |
5 |
1 |
2 |
4 |
12 |
UOP |
3 |
5 |
1 |
1 |
2 |
12 |
DELPHI TECHNOLOGIES, INC. |
0 |
3 |
2 |
5 |
1 |
11 |
MAHLE FILTERSYSTEME GMBH |
0 |
1 |
2 |
4 |
4 |
11 |
SANYO ELECTRIC CO., LTD. |
0 |
4 |
1 |
3 |
3 |
11 |
AGILENT TECHNOLOGIES, INC. |
3 |
2 |
1 |
3 |
1 |
10 |
AKZO NOBEL NV |
2 |
1 |
1 |
3 |
3 |
10 |
BAKER HUGHES INCORPORATED |
5 |
0 |
3 |
2 |
0 |
10 |
BALDWIN FILTERS, INC. |
2 |
2 |
3 |
1 |
2 |
10 |
BASF AKTIENGESELLSCHAFT |
4 |
0 |
1 |
4 |
1 |
10 |
DEGREMONT S.A. |
6 |
2 |
1 |
1 |
0 |
10 |
E. I. DU PONT DE NEMOURS AND COMPANY |
4 |
1 |
0 |
4 |
1 |
10 |
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY |
0 |
0 |
2 |
4 |
4 |
10 |
FANTOM TECHNOLOGIES INC. |
6 |
3 |
1 |
0 |
0 |
10 |
HONEYWELL INTERNATIONAL INC. |
0 |
3 |
3 |
2 |
2 |
10 |
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE |
7 |
1 |
2 |
0 |
0 |
10 |
MEDTRONIC INC. |
0 |
0 |
2 |
5 |
3 |
10 |
ONDEO NALCO COMPANY |
0 |
2 |
4 |
4 |
0 |
10 |
U.S. FILTER WASTEWATER GROUP, INC. |
0 |
0 |
2 |
2 |
6 |
10 |
BAYER AKTIENGESELLSCHAFT |
1 |
6 |
0 |
1 |
1 |
9 |
COMMISSARIAT A L'ENERGIE ATOMIQUE |
2 |
2 |
2 |
1 |
2 |
9 |
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH |
0 |
0 |
4 |
2 |
3 |
9 |
EBARA CORPORATION |
0 |
2 |
2 |
4 |
1 |
9 |
FUJI PHOTO FILM CO., LTD |
4 |
3 |
2 |
0 |
0 |
9 |
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN |
3 |
2 |
0 |
2 |
2 |
9 |
KIMBERLY-CLARK WORLDWIDE, INC. |
3 |
3 |
2 |
1 |
0 |
9 |
MITSUBISHI RAYON CO., LTD. |
5 |
2 |
2 |
0 |
0 |
9 |
NELSON INDUSTRIES, INC. |
2 |
3 |
3 |
1 |
0 |
9 |
NEPHROS, INC. |
2 |
2 |
1 |
3 |
1 |
9 |
PROCTER + GAMBLE COMPANY |
0 |
2 |
4 |
1 |
2 |
9 |
PTI TECHNOLOGIES, INC. |
1 |
1 |
0 |
2 |
5 |
9 |
UNITED STATES OF AMERICA, NAVY |
4 |
0 |
1 |
3 |
1 |
9 |
AMERSHAM PHARMACIA BIOTECH AB |
4 |
3 |
1 |
0 |
0 |
8 |
BERGER INSTRUMENTS, INC. |
0 |
2 |
5 |
1 |
0 |
8 |
DIALYSIS SYSTEMS, INC. |
5 |
0 |
3 |
0 |
0 |
8 |
DONALDSON COMPANY, INC. |
5 |
1 |
0 |
2 |
0 |
8 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
0 |
1 |
3 |
3 |
1 |
8 |
HITACHI, LTD |
3 |
1 |
1 |
1 |
2 |
8 |
KOSLOW TECHNOLOGIES CORPORATION |
0 |
0 |
3 |
3 |
2 |
8 |
NALCO COMPANY |
0 |
0 |
0 |
4 |
4 |
8 |
PARKER HANNIFIN OY |
3 |
1 |
3 |
1 |
0 |
8 |
SANDIA CORPORATION |
0 |
2 |
0 |
6 |
0 |
8 |
SHIMADZU CORPORATION |
2 |
1 |
2 |
1 |
2 |
8 |
ADVION BIOSCIENCES, INC. |
0 |
0 |
1 |
5 |
1 |
7 |
ALLTECH ASSOCIATES, INC. |
2 |
0 |
2 |
2 |
1 |
7 |
AQUA-AEROBIC SYSTEMS INC. |
1 |
0 |
1 |
2 |
3 |
7 |
ASAHI KASEI KOGYO KABUSHIKI KAISHA |
3 |
3 |
1 |
0 |
0 |
7 |
ASAHI MEDICAL CO., LTD. |
1 |
3 |
1 |
1 |
1 |
7 |
BATTELLE MEMORIAL INSTITUTE |
1 |
2 |
1 |
3 |
0 |
7 |
CH2M HILL, INC. |
0 |
0 |
1 |
3 |
3 |
7 |
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED |
1 |
2 |
1 |
2 |
1 |
7 |
COCA-COLA COMPANY |
2 |
3 |
1 |
1 |
0 |
7 |
CORNING INCORPORATED |
4 |
2 |
0 |
0 |
1 |
7 |
DEGUSSA AKTIENGESELLSCHAFT |
1 |
1 |
2 |
2 |
1 |
7 |
HYDAC FILTERTECHNIK GMBH |
0 |
1 |
2 |
3 |
1 |
7 |
IONICS, INC. |
1 |
0 |
4 |
2 |
0 |
7 |
ISCO, INC. |
5 |
0 |
1 |
1 |
0 |
7 |
KIONIX, INC. |
1 |
4 |
0 |
2 |
0 |
7 |
LANCER PARTNERSHIP LTD. |
0 |
1 |
2 |
4 |
0 |
7 |
MARINE DESALINATION SYSTEMS, L.L.C. |
0 |
0 |
1 |
4 |
2 |
7 |
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG |
1 |
2 |
2 |
1 |
1 |
7 |
NIPRO CORPORATION |
2 |
0 |
4 |
1 |
0 |
7 |
SUEZ-LYONNAISE DES EAUX |
3 |
1 |
3 |
0 |
0 |
7 |
UNITED STATES OF AMERICA, DEPARTMENT OF THE INTERIOR |
1 |
3 |
0 |
1 |
2 |
7 |
AGRIMOND, L.L.C. |
1 |
2 |
3 |
0 |
0 |
6 |
ALLIED-SIGNAL INC. |
3 |
2 |
1 |
0 |
0 |
6 |
AMCOL INTERNATIONAL CORPORATION |
1 |
4 |
0 |
1 |
0 |
6 |
ASHBROOK CORPORATION |
2 |
1 |
2 |
1 |
0 |
6 |
ASHLAND INC. |
0 |
0 |
4 |
2 |
0 |
6 |
BIOPROCESS TECHNOLOGIES, LTD. |
1 |
0 |
0 |
0 |
5 |
6 |
DEXTER MAGNETIC TECHNOLOGIES, INC. |
0 |
2 |
4 |
0 |
0 |
6 |
DOW CHEMICAL COMPANY |
3 |
3 |
0 |
0 |
0 |
6 |
GLOBAL BIOSCIENCES, INC. |
1 |
1 |
1 |
1 |
2 |
6 |
HALLIBURTON ENERGY SERVICES, INC. |
0 |
0 |
1 |
2 |
3 |
6 |
INNOVA/PURE WATER INC. |
3 |
0 |
3 |
0 |
0 |
6 |
JAPAN SCIENCE AND TECHNOLOGY CORPORATION |
1 |
0 |
0 |
3 |
2 |
6 |
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY |
2 |
2 |
1 |
1 |
0 |
6 |
KVAERNER PULPING AKTIEBOLAG |
2 |
1 |
1 |
1 |
1 |
6 |
M-I L.L.C |
0 |
0 |
1 |
2 |
3 |
6 |
MICROBAN PRODUCTS COMPANY |
3 |
0 |
2 |
0 |
1 |
6 |
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO |
0 |
2 |
1 |
3 |
0 |
6 |
ONTOGEN CORPORATION |
1 |
4 |
1 |
0 |
0 |
6 |
PHASE, INC. |
1 |
0 |
0 |
3 |
2 |
6 |
SIEMENS AKTIENGESELLSCHAFT |
0 |
1 |
2 |
0 |
3 |
6 |
SPX CORPORATION |
0 |
0 |
2 |
2 |
2 |
6 |
THERMACO, INC. |
0 |
2 |
1 |
1 |
2 |
6 |
USF FILTRATION AND SEPARATIONS GROUP INC. |
5 |
0 |
1 |
0 |
0 |
6 |
WATERVISIONS INTERNATIONAL, INC. |
2 |
0 |
0 |
1 |
3 |
6 |
WEATHERFORD/LAMB, INC. |
0 |
0 |
1 |
4 |
1 |
6 |
AIR PRODUCTS AND CHEMICALS, INC. |
1 |
2 |
0 |
1 |
1 |
5 |
BASF CORP. |
0 |
2 |
1 |
2 |
0 |
5 |
BECHTEL BWXT IDAHO, LLC |
1 |
1 |
2 |
1 |
0 |
5 |
BIOTAGE, INC. |
0 |
1 |
2 |
2 |
0 |
5 |
BUCHER-GUYER AG MASCHINENFABRIK |
2 |
2 |
0 |
0 |
1 |
5 |
CLEARLINE SYSTEMS, INC. |
3 |
1 |
1 |
0 |
0 |
5 |
COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANIZATION |
0 |
2 |
1 |
0 |
2 |
5 |
CONOCOPHILLIPS COMPANY |
0 |
0 |
0 |
1 |
4 |
5 |
CREAVIS GESELLSCHAFT FUR TECHNOLOGIE UND INNOVATION MBH |
2 |
1 |
1 |
0 |
1 |
5 |
DENSO CORPORATION |
1 |
1 |
0 |
0 |
3 |
5 |
DHARMA LIVING SYSTEMS, INC. |
0 |
0 |
0 |
2 |
3 |
5 |
DIONEX CORPORATION |
1 |
0 |
2 |
1 |
1 |
5 |
DOW GLOBAL TECHNOLOGIES INC. |
0 |
0 |
3 |
1 |
1 |
5 |
DYAX CORP. |
3 |
2 |
0 |
0 |
0 |
5 |
G.B.D. CORP. |
5 |
0 |
0 |
0 |
0 |
5 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) |
0 |
0 |
3 |
1 |
1 |
5 |
HOSPAL INDUSTRIES (S.A.) |
3 |
1 |
0 |
1 |
0 |
5 |
IBC ADVANCED TECHNOLOGIES, INC. |
0 |
1 |
3 |
1 |
0 |
5 |
KINETICO, INC. |
1 |
2 |
0 |
1 |
1 |
5 |
KRUGER AS |
5 |
0 |
0 |
0 |
0 |
5 |
KUSS CORPORATION |
1 |
2 |
1 |
1 |
0 |
5 |
NANOSTREAM, INC. |
0 |
0 |
0 |
3 |
2 |
5 |
NATE INTERNATIONAL |
1 |
0 |
3 |
0 |
1 |
5 |
NOVASEP S.A. |
0 |
2 |
1 |
0 |
2 |
5 |
OTV SOCIETE ANONYME |
0 |
0 |
2 |
1 |
2 |
5 |
OXYGEN8, INC. |
4 |
0 |
1 |
0 |
0 |
5 |
PARKSON CORPORATION |
1 |
1 |
1 |
2 |
0 |
5 |
POLARIS POOL SYSTEMS, INC. |
2 |
1 |
0 |
2 |
0 |
5 |
QIAGEN GMBH |
1 |
1 |
2 |
0 |
1 |
5 |
RF DELAWARE, INC. |
1 |
0 |
2 |
1 |
1 |
5 |
SEH AMERICA, INC. |
1 |
3 |
1 |
0 |
0 |
5 |
SUMITOMO HEAVY INDUSTRIES, LTD. |
1 |
3 |
0 |
1 |
0 |
5 |
UNIVERSAL SEPARATORS, INC. |
2 |
0 |
1 |
2 |
0 |
5 |
VARCO I/P, INC. |
0 |
2 |
2 |
1 |
0 |
5 |
VORTEX INTERNATIONAL, LLC |
0 |
2 |
2 |
1 |
0 |
5 |
WATER RESEARCH COMMISSION |
4 |
0 |
1 |
0 |
0 |
5 |
WIX FILTRATION CORP. |
0 |
0 |
0 |
0 |
5 |
5 |
ZODIAC POOL CARE, INC. |
3 |
0 |
0 |
1 |
1 |
5 |