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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 2000 - 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 210, Liquid Purification or Separation

( 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 2000 2001 2002 2003 2004 Total
~Individually Owned Patent 271 310 245 206 208 1240
BAXTER INTERNATIONAL INC. 12 13 10 7 5 47
U.S. FILTER CORPORATION 11 6 13 5 7 42
PALL CORPORATION 9 9 9 2 8 37
INSTITUT FRANCAIS DU PETROLE 13 7 6 3 3 32
ZENON ENVIRONMENTAL INC. 4 8 6 7 7 32
NALCO CHEMICAL COMPANY 14 13 4 0 0 31
TRANSGENOMIC INCORPORATED 8 4 11 6 0 29
DANA CORPORATION 6 8 5 3 6 28
FILTERWERK MANN + HUMMEL GMBH 2 3 3 11 4 23
FLEETGUARD, INC. 2 5 2 11 2 22
PARKER-HANNIFIN CORPORATION 7 7 2 3 3 22
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 9 0 6 3 3 21
ARCHIMEDES TECHNOLOGY GROUP, INC. 1 8 0 3 7 19
BAKER HUGHES INCORPORATED 9 5 0 3 2 19
CUNO INC. 4 4 3 2 5 18
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 2 5 5 3 3 18
WATERS INVESTMENTS LIMITED 2 3 4 4 5 18
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH 5 2 3 2 5 17
MILLIPORE CORPORATION 4 3 2 0 8 17
NITTO DENKO CORPORATION 2 3 5 3 4 17
DEGREMONT S.A. 6 6 2 1 1 16
EASTMAN KODAK COMPANY 4 3 2 3 4 16
KURITA WATER INDUSTRIES LTD. 6 2 4 3 1 16
SARTORIUS AG 2 6 4 4 0 16
DAICEL CHEMICAL INDUSTRIES LTD. 3 4 3 4 1 15
TORAY INDUSTRIES INC. 1 4 5 4 1 15
UOP 4 3 5 1 1 14
DONALDSON COMPANY, INC. 5 5 1 0 2 13
GENERAL ELECTRIC COMPANY 0 4 4 2 3 13
USF FILTRATION AND SEPARATIONS GROUP INC. 7 5 0 1 0 13
ACCESS BUSINESS GROUP INTERNATIONAL LLC 0 0 1 4 7 12
BASF AKTIENGESELLSCHAFT 3 4 0 1 4 12
DYAX CORP. 7 3 2 0 0 12
HITACHI, LTD 6 3 1 1 1 12
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 2 7 1 2 0 12
MYKROLIS CORPORATION 0 1 3 6 2 12
ORGANO CORPORATION 1 4 6 1 0 12
SYMYX TECHNOLOGIES, INC. 0 1 8 0 3 12
ASAHI KASEI KOGYO KABUSHIKI KAISHA 4 3 3 1 0 11
BAYER AKTIENGESELLSCHAFT 3 1 6 0 1 11
EBARA CORPORATION 3 0 2 2 4 11
FANTOM TECHNOLOGIES INC. 1 6 3 1 0 11
FUJI PHOTO FILM CO., LTD 2 4 3 2 0 11
ISCO, INC. 4 5 0 1 1 11
SANDIA CORPORATION 3 0 2 0 6 11
SHELL OIL COMPANY 1 1 2 2 5 11
AGILENT TECHNOLOGIES, INC. 1 3 2 1 3 10
AMERSHAM PHARMACIA BIOTECH AB 2 4 3 1 0 10
DELPHI TECHNOLOGIES, INC. 0 0 3 2 5 10
E. I. DU PONT DE NEMOURS AND COMPANY 1 4 1 0 4 10
NELSON INDUSTRIES, INC. 1 2 3 3 1 10
ONDEO NALCO COMPANY 0 0 2 4 4 10
OUTOKUMPU OYJ 0 2 1 3 4 10
SANYO ELECTRIC CO., LTD. 2 0 4 1 3 10
ALLIED-SIGNAL INC. 3 3 2 1 0 9
AMERSHAM BIOSCIENCES AB 0 0 0 5 4 9
ARVIN TECHNOLOGIES, INC. 0 0 1 2 6 9
BATTELLE MEMORIAL INSTITUTE 2 1 2 1 3 9
BETZDEARBORN INC. 7 2 0 0 0 9
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED 3 1 2 1 2 9
CORNING INCORPORATED 3 4 2 0 0 9
HEMASURE, INC. 5 3 1 0 0 9
HONEYWELL INTERNATIONAL INC. 1 0 3 3 2 9
HYDROTREAT, INC. 0 1 0 2 6 9
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 2 3 2 0 2 9
INNOVA/PURE WATER INC. 3 3 0 3 0 9
KIMBERLY-CLARK WORLDWIDE, INC. 0 3 3 2 1 9
MITSUBISHI RAYON CO., LTD. 0 5 2 2 0 9
SHIMADZU CORPORATION 3 2 1 2 1 9
AKZO NOBEL NV 1 2 1 1 3 8
ASAHI MEDICAL CO., LTD. 2 1 3 1 1 8
BALDWIN FILTERS, INC. 0 2 2 3 1 8
BERGER INSTRUMENTS, INC. 0 0 2 5 1 8
COMMISSARIAT A L'ENERGIE ATOMIQUE 1 2 2 2 1 8
DIALYSIS SYSTEMS, INC. 0 5 0 3 0 8
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. 1 0 1 3 3 8
HOSPAL INDUSTRIES (S.A.) 3 3 1 0 1 8
MEDTRONIC INC. 1 0 0 2 5 8
NEPHROS, INC. 0 2 2 1 3 8
PARKER HANNIFIN OY 0 3 1 3 1 8
SHINKO PANTEC COMPANY, LIMITED 4 2 2 0 0 8
STANADYNE CORPORATION 0 0 5 1 2 8
TEXACO INC. 4 0 0 3 1 8
UNITED STATES OF AMERICA, NAVY 0 4 0 1 3 8
ABTECH INDUSTRIES, INC. 4 1 0 1 1 7
AQUA-AEROBIC SYSTEMS INC. 3 1 0 1 2 7
ASHLAND INC. 1 0 0 4 2 7
BECHTEL BWXT IDAHO, LLC 2 1 1 2 1 7
COCA-COLA COMPANY 0 2 3 1 1 7
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH 1 0 0 4 2 7
DOW CHEMICAL COMPANY 1 3 3 0 0 7
HYDAC FILTERTECHNIK GMBH 1 0 1 2 3 7
IONICS, INC. 0 1 0 4 2 7
KIONIX, INC. 0 1 4 0 2 7
LANCER PARTNERSHIP LTD. 0 0 1 2 4 7
MAHLE FILTERSYSTEME GMBH 0 0 1 2 4 7
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG 1 1 2 2 1 7
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO 1 0 2 1 3 7
NIPRO CORPORATION 0 2 0 4 1 7
PROCTER + GAMBLE COMPANY 0 0 2 4 1 7
SUEZ-LYONNAISE DES EAUX 0 3 1 3 0 7
3M INNOVATIVE PROPERTIES COMPANY 2 0 1 2 1 6
ADVION BIOSCIENCES, INC. 0 0 0 1 5 6
AGRIMOND, L.L.C. 0 1 2 3 0 6
ALLTECH ASSOCIATES, INC. 0 2 0 2 2 6
AMCOL INTERNATIONAL CORPORATION 0 1 4 0 1 6
ASHBROOK CORPORATION 0 2 1 2 1 6
BASF CORP. 1 0 2 1 2 6
BUCHER-GUYER AG MASCHINENFABRIK 2 2 2 0 0 6
CATERPILLAR INC. 4 0 1 0 1 6
CLEARLINE SYSTEMS, INC. 1 3 1 1 0 6
DEGUSSA AKTIENGESELLSCHAFT 0 1 1 2 2 6
DEXTER MAGNETIC TECHNOLOGIES, INC. 0 0 2 4 0 6
DIONEX CORPORATION 2 1 0 2 1 6
ENVIROQUIP, INC. 2 1 1 0 2 6
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY 0 0 0 2 4 6
GAMBRO AB 3 1 2 0 0 6
IBC ADVANCED TECHNOLOGIES, INC. 1 0 1 3 1 6
KINETICO, INC. 2 1 2 0 1 6
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY 0 2 2 1 1 6
KOSLOW TECHNOLOGIES CORPORATION 0 0 0 3 3 6
ONTOGEN CORPORATION 0 1 4 1 0 6
OXYGEN8, INC. 1 4 0 1 0 6
RF DELAWARE, INC. 2 1 0 2 1 6
SANDEN CORPORATION 4 2 0 0 0 6
UNITED STATES OF AMERICA, DEPARTMENT OF THE INTERIOR 1 1 3 0 1 6
WATER RESEARCH COMMISSION 1 4 0 1 0 6
AKSYS, LTD. 3 1 1 0 0 5
ALBEMARLE CORPORATION 1 1 2 0 1 5
AQUA PARTNERS, LTD. 3 2 0 0 0 5
BIOTAGE, INC. 0 0 1 2 2 5
BRISTOL-MYERS SQUIBB COMPANY 3 0 2 0 0 5
COHESIVE TECHNOLOGIES, INC. 2 1 0 1 1 5
DENSO CORPORATION 3 1 1 0 0 5
ECOLAB INC. 1 0 2 2 0 5
EMERSON ELECTRIC CO. 3 0 2 0 0 5
FRESENIUS AG 1 2 1 0 1 5
G.B.D. CORP. 0 5 0 0 0 5
GENENTECH, INC. 2 1 1 1 0 5
GRT, INC. 1 1 2 1 0 5
HALLIBURTON ENERGY SERVICES, INC. 2 0 0 1 2 5
HITCO CARBON COMPOSITES, INC. 1 2 2 0 0 5
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 1 0 0 3 1 5
ING. WALTER HENGST GMBH & CO. KG 3 0 0 1 1 5
KRUGER AS 0 5 0 0 0 5
KUSS CORPORATION 0 1 2 1 1 5
KVAERNER PULPING AKTIEBOLAG 0 2 1 1 1 5
LYNNTECH, INC. 4 0 1 0 0 5
MARINE DESALINATION SYSTEMS, L.L.C. 0 0 0 1 4 5
MICROBAN PRODUCTS COMPANY 0 3 0 2 0 5
NEC CORPORATION 2 1 1 1 0 5
OMEGA CO., LTD. 1 3 0 1 0 5
OMNIUM DE TRAITEMENTS ET DE VALORISATION (O.T.V.) 3 1 0 1 0 5
PAQUES BIO SYSTEMS B.V. 3 0 1 1 0 5
PARKSON CORPORATION 0 1 1 1 2 5
PENTAPURE INCORPORATED 1 1 1 2 0 5
PHASE, INC. 1 1 0 0 3 5
POLARIS POOL SYSTEMS, INC. 0 2 1 0 2 5
SEH AMERICA, INC. 0 1 3 1 0 5
SPX CORPORATION 1 0 0 2 2 5
SUMITOMO HEAVY INDUSTRIES, LTD. 0 1 3 0 1 5
UNIVERSAL SEPARATORS, INC. 0 2 0 1 2 5
UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION 2 1 0 2 0 5
VARCO I/P, INC. 0 0 2 2 1 5
VORTEX INTERNATIONAL, LLC 0 0 2 2 1 5
WEATHERFORD/LAMB, INC. 0 0 0 1 4 5
XEROX CORPORATION 2 0 0 2 1 5
ZODIAC POOL CARE, INC. 1 3 0 0 1 5


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