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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 1998 - 2002 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 1998 1999 2000 2001 2002 Total
~Individually Owned Patent 258 279 271 309 245 1362
BAXTER INTERNATIONAL INC. 18 10 12 13 10 63
PALL CORPORATION 14 12 9 9 9 53
NALCO CHEMICAL COMPANY 11 7 14 13 4 49
U.S. FILTER CORPORATION 6 5 11 6 13 41
INSTITUT FRANCAIS DU PETROLE 3 3 13 7 6 32
BAKER HUGHES INCORPORATED 6 10 9 5 0 30
DANA CORPORATION 6 3 6 8 5 28
TRANSGENOMIC INCORPORATED 1 2 8 4 11 26
SAMSUNG ELECTRONICS CO., LTD. 17 6 1 1 0 25
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 3 8 8 0 6 25
ZENON ENVIRONMENTAL INC. 2 5 4 8 6 25
BETZDEARBORN INC. 10 4 7 2 0 23
PARKER-HANNIFIN CORPORATION 4 3 7 7 2 23
UOP 6 4 4 3 5 22
KURITA WATER INDUSTRIES LTD. 3 5 6 2 4 20
MILLIPORE CORPORATION 4 7 4 3 2 20
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 5 2 2 5 5 19
EASTMAN KODAK COMPANY 4 5 4 3 2 18
FLEETGUARD, INC. 4 4 2 5 2 17
AKSYS, LTD. 7 4 3 1 1 16
CUNO INC. 1 4 4 4 3 16
CYTEC TECHNOLOGY CORP. 11 3 1 1 0 16
HEMASURE, INC. 4 3 5 3 1 16
HITACHI, LTD 1 5 6 3 1 16
ORGANO CORPORATION 4 1 1 4 6 16
USF FILTRATION AND SEPARATIONS GROUP INC. 0 4 7 5 0 16
DONALDSON COMPANY, INC. 2 2 5 5 1 15
BAYER AKTIENGESELLSCHAFT 2 2 3 1 6 14
DAICEL CHEMICAL INDUSTRIES LTD. 3 1 3 4 3 14
DEGREMONT S.A. 0 0 6 6 2 14
FUJI PHOTO FILM CO., LTD 2 3 2 4 3 14
TORAY INDUSTRIES INC. 1 3 1 4 5 14
BRISTOL-MYERS SQUIBB COMPANY 5 3 3 0 2 13
DYAX CORP. 0 1 7 3 2 13
FILTERWERK MANN + HUMMEL GMBH 3 2 2 3 3 13
NITTO DENKO CORPORATION 1 2 2 3 5 13
OMNIUM DE TRAITEMENTS ET DE VALORISATION (O.T.V.) 4 5 3 1 0 13
SARTORIUS AG 0 1 2 6 4 13
ASAHI KASEI KOGYO KABUSHIKI KAISHA 0 2 4 3 3 12
BASF AKTIENGESELLSCHAFT 4 1 3 4 0 12
GENERAL ELECTRIC COMPANY 3 1 0 4 4 12
ISCO, INC. 1 2 4 5 0 12
AMERSHAM PHARMACIA BIOTECH AB 1 1 2 4 3 11
COBE LABORATORIES, INC. 5 3 3 0 0 11
GAMBRO AB 2 3 3 1 2 11
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 0 1 2 7 1 11
WATERS INVESTMENTS LIMITED 0 2 2 3 4 11
AKZO NOBEL NV 2 4 1 2 1 10
ALLIED-SIGNAL INC. 2 0 3 3 2 10
BALDWIN FILTERS, INC. 3 3 0 2 2 10
CATERPILLAR INC. 4 1 4 0 1 10
CORNING INCORPORATED 1 0 3 4 2 10
FANTOM TECHNOLOGIES INC. 0 0 1 6 3 10
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH 0 0 5 2 3 10
HOSPAL INDUSTRIES (S.A.) 2 1 3 3 1 10
KIMBERLY-CLARK WORLDWIDE, INC. 1 3 0 3 3 10
ARCHIMEDES TECHNOLOGY GROUP, INC. 0 0 1 8 0 9
BIO-RAD LABORATORIES, INC. 2 5 1 1 0 9
DELTA ENVIRONMENTAL PRODUCTS, INC. 3 3 1 2 0 9
DOW CHEMICAL COMPANY 1 1 1 3 3 9
EXXON RESEARCH + ENGINEERING CO. 2 3 2 2 0 9
FRESENIUS AG 3 2 1 2 1 9
MITSUBISHI RAYON CO., LTD. 1 1 0 5 2 9
NELSON INDUSTRIES, INC. 1 2 1 2 3 9
STANADYNE AUTOMOTIVE CORP. 2 4 2 1 0 9
SYMYX TECHNOLOGIES, INC. 0 0 0 1 8 9
BATTELLE MEMORIAL INSTITUTE 1 2 2 1 2 8
BUCHER-GUYER AG MASCHINENFABRIK 1 1 2 2 2 8
COMMISSARIAT A L'ENERGIE ATOMIQUE 0 3 1 2 2 8
DERRICK MANUFACTURING CORPORATION 2 4 1 0 1 8
DIONEX CORPORATION 2 3 2 1 0 8
E. I. DU PONT DE NEMOURS AND COMPANY 1 1 1 4 1 8
EBARA CORPORATION 1 2 3 0 2 8
H-TECH, INC. 0 4 1 3 0 8
KUSS CORPORATION 3 2 0 1 2 8
LUCAS INDUSTRIES PUBLIC LTD. COMPANY 1 6 0 1 0 8
NEC CORPORATION 3 1 2 1 1 8
SHELL OIL COMPANY 2 2 1 1 2 8
SHINKO PANTEC COMPANY, LIMITED 0 0 4 2 2 8
TEXACO INC. 2 2 4 0 0 8
UNITED STATES OF AMERICA, DEPARTMENT OF THE INTERIOR 0 3 1 1 3 8
UNITED STATES OF AMERICA, NAVY 2 2 0 4 0 8
AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 5 0 2 0 0 7
AMCOL INTERNATIONAL CORPORATION 0 2 0 1 4 7
AQUA-AEROBIC SYSTEMS INC. 0 3 3 1 0 7
BASF CORP. 3 1 1 0 2 7
CALGON CORPORATION 4 1 1 1 0 7
COCA-COLA COMPANY 1 1 0 2 3 7
COHESIVE TECHNOLOGIES, INC. 2 2 2 1 0 7
DENSO CORPORATION 0 2 3 1 1 7
EMERSON ELECTRIC CO. 1 1 3 0 2 7
ENVIROQUIP, INC. 2 1 2 1 1 7
FOUNTAINHEAD TECHNOLOGIES, INC. 4 2 1 0 0 7
IDAHO RESEARCH FOUNDATION, INC. 4 1 0 1 1 7
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 0 0 2 3 2 7
ING. WALTER HENGST GMBH & CO. KG 3 1 3 0 0 7
SANDEN CORPORATION 0 1 4 2 0 7
WATER RESEARCH COMMISSION 0 2 1 4 0 7
ABTECH INDUSTRIES, INC. 0 1 4 1 0 6
AGILENT TECHNOLOGIES, INC. 0 0 1 3 2 6
ARCH DEVELOPMENT CORP. 1 4 0 0 1 6
ASAHI MEDICAL CO., LTD. 0 0 2 1 3 6
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED 0 0 3 1 2 6
EASTMAN CHEMICAL CO., LTD. 1 4 1 0 0 6
HEWLETT-PACKARD COMPANY 2 4 0 0 0 6
IMMUNIVEST CORPORATION 1 3 2 0 0 6
INNOVA/PURE WATER INC. 0 0 3 3 0 6
KINETICO, INC. 1 0 2 1 2 6
KRUGER AS 0 1 0 5 0 6
LYNNTECH, INC. 1 0 4 0 1 6
MEDISYSTEMS TECHNOLOGY CORPORATION 1 2 3 0 0 6
MEDTRONIC INC. 2 3 1 0 0 6
OXYGEN8, INC. 0 1 1 4 0 6
PHARMACIA BIOTECH AB 5 0 0 1 0 6
RECOVERY ENGINEERING, INC. 2 2 1 1 0 6
SANDIA CORPORATION 1 0 3 0 2 6
SANYO ELECTRIC CO., LTD. 0 0 2 0 4 6
SHIMADZU CORPORATION 0 0 3 2 1 6
TETRA TECHNOLOGIES, INC. 1 2 2 0 1 6
WHATMAN INC. 1 1 4 0 0 6
ZOELLER COMPANY 1 2 1 1 1 6
ANDRITZ-PATENTVERWALTUNGS-GESELLSCHAFT M.B.H. 2 1 1 1 0 5
AQUA PARTNERS, LTD. 0 0 3 2 0 5
BECTON, DICKINSON AND COMPANY 2 1 0 0 2 5
BRITISH NUCLEAR FUELS PLC 3 0 0 2 0 5
CLEARLINE SYSTEMS, INC. 0 0 1 3 1 5
DELAWARE CAPITAL FORMATION, INC. 2 1 0 1 1 5
DIALYSIS SYSTEMS, INC. 0 0 0 5 0 5
G.B.D. CORP. 0 0 0 5 0 5
HENKEL CORPORATION 3 2 0 0 0 5
HITACHI PLANT ENGINEERING & CONSTRUCTION CO., LTD. 1 3 1 0 0 5
HITCO CARBON COMPOSITES, INC. 0 0 1 2 2 5
IMPERIAL CHEMICAL INDUSTRIES PLC 3 1 0 1 0 5
KEMIRA KEMI AKTIEBOLAG 1 2 1 1 0 5
KIONIX, INC. 0 0 0 1 4 5
MICROBAR INCORPORATED 0 3 0 1 1 5
MILLIPORE INVESTMENT HOLDINGS LIMITED 3 0 1 1 0 5
MINNESOTA MINING AND MANUFACTURING COMPANY 2 3 0 0 0 5
MINNTECH CORPORATION 3 0 0 2 0 5
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO 0 2 1 0 2 5
NIPPON SHOKUBAI CO., LTD. 1 2 0 0 2 5
NIPPONDENSO CO., LTD. 2 3 0 0 0 5
ONTOGEN CORPORATION 0 0 0 1 4 5
PLYMOUTH PRODUCTS INCORPORATED 0 3 1 0 1 5
RHONE-POULENC CHIMIE 3 2 0 0 0 5
ROHM AND HAAS COMPANY 2 1 1 0 1 5
SIEMENS AKTIENGESELLSCHAFT 0 3 1 0 1 5
STANADYNE CORPORATION 0 0 0 0 5 5
UNION OIL COMPANY OF CALIFORNIA 1 2 2 0 0 5
UNIVERSITY OF WASHINGTON 0 3 1 0 1 5
UNIVERSITY OF WATERLOO 0 2 0 3 0 5
WASTECH INTERNATIONAL, INC. 3 0 2 0 0 5
  0 1 0 2 2 5


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