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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 369, Dynamic Information Storage or Retrieval

( 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
SONY CORPORATION 206 152 154 158 140 810
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 69 66 70 101 84 390
PIONEER ELECTRONIC CORPORATION 57 59 49 56 28 249
SAMSUNG ELECTRONICS CO., LTD. 59 42 33 51 53 238
HITACHI, LTD 33 30 23 51 70 207
TOSHIBA CORPORATION 54 43 35 28 27 187
FUJITSU LIMITED 36 38 36 29 31 170
NEC CORPORATION 46 41 22 24 10 143
CANON KABUSHIKI KAISHA 53 30 21 10 8 122
~Individually Owned Patent 26 21 27 20 28 122
SANYO ELECTRIC CO., LTD. 19 13 13 29 34 108
LG ELECTRONICS INC. 7 14 23 20 41 105
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 32 21 11 17 20 101
INTERNATIONAL BUSINESS MACHINES CORPORATION 22 16 29 18 10 95
U.S. PHILIPS CORPORATION 26 14 17 20 13 90
RICOH COMPANY, LTD. 20 14 14 15 23 86
MITSUBISHI DENKI KABUSHIKI KAISHA 13 17 14 13 25 82
PIONEER CORPORATION 0 0 2 15 51 68
HEWLETT-PACKARD COMPANY 8 6 11 15 16 56
EASTMAN KODAK COMPANY 23 15 5 3 4 50
TEAC CORPORATION 5 14 11 13 7 50
OLYMPUS OPTICAL CO., LTD. 10 9 4 8 16 47
VICTOR COMPANY OF JAPAN, LIMITED 6 12 10 7 12 47
DISCOVISION ASSOCIATES 13 11 8 9 5 46
DEUTSCHE THOMSON-BRANDT GMBH 7 10 9 13 5 44
DAEWOO ELECTRONICS COMPANY, LTD. 17 17 6 2 1 43
TDK CORPORATION 2 5 11 12 10 40
ALPS ELECTRIC CO., LTD. 2 11 8 9 8 38
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 5 3 3 8 12 31
NIKON CORPORATION 16 10 4 0 1 31
SEAGATE TECHNOLOGY, INCORPORATED 3 6 14 6 2 31
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA 5 8 2 7 8 30
MITSUMI ELECTRIC CO., LTD. 2 8 5 10 5 30
SEAGATE TECHNOLOGY, LLC 0 0 2 14 12 28
YAMAHA CORPORATION 5 5 3 9 6 28
FUNAI ELECTRIC CO., LTD. 4 5 2 8 8 27
HITACHI MAXELL, LTD. 0 6 5 3 13 27
NAKAMICHI CORPORATION 10 10 5 1 1 27
KONICA CORPORATION 6 3 4 3 5 21
ALPINE ELECTRONICS INC. 4 4 2 6 3 19
SANKYO SEIKI MFG. CO., LTD. 5 1 8 2 3 19
READ-RITE CORPORATION 2 7 4 3 2 18
MITSUBISHI CHEMICAL CORPORATION 5 3 5 1 3 17
TERASTOR CORPORATION 0 4 5 3 5 17
CIRRUS LOGIC, INC. 0 5 4 3 4 16
KABUSHIKI KAISHA KENWOOD 2 4 2 3 4 15
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 0 0 14 14
NIPPON COLUMBIA COMPANY, LTD. 3 4 3 1 3 14
ZEN RESEARCH N.V. 7 3 3 0 0 13
CLARION CO., LTD. 1 1 0 3 6 11
IMATION CORP. 3 4 1 2 1 11
OAK TECHNOLOGIES, INC. 0 1 4 1 4 10
THOMSON LICENSING S.A. 0 0 0 2 8 10
SEIKO EPSON CORPORATION 2 2 2 1 2 9
THOMSON-CSF 1 5 1 1 1 9
COMPAQ COMPUTER CORPORATION, INC. 2 0 4 0 2 8
LSI LOGIC CORPORATION 0 0 2 5 1 8
ROBERT BOSCH GMBH 0 1 1 2 4 8
ROHM COMPANY LIMITED 2 2 2 1 1 8
TAIYO YUDEN CO., LTD. 0 1 0 2 5 8
TANASHIN DENKI CO., LTD. 2 0 2 4 0 8
ZEN RESEARCH (IRELAND), LTD. 0 0 0 2 6 8
BEHAVIOR TECH COMPUTER CORP. 3 0 1 3 0 7
WEA MANUFACTURING INC. 3 2 1 1 0 7
ACER PERIPHERALS, INC. 1 0 4 1 0 6
DIGITAL OPTICS CORPORATION 2 3 1 0 0 6
FUJI XEROX CO., LTD. 1 0 0 2 3 6
FUJITSU TEN LIMITED 0 2 1 1 2 6
IOMEGA CORPORATION 1 0 1 2 2 6
LASER DYNAMICS INC. 0 4 0 1 1 6
MAXOPTIX CORPORATION 0 0 1 5 0 6
PHILIPS ELECTRONICS NORTH AMERICA CORP. 0 0 4 2 0 6
SIROS TECHNOLOGIES, INC. 0 0 1 5 0 6
AIWA CO., LTD. 0 2 1 0 2 5
CALIMETRICS, INC. 2 0 1 0 2 5
FUNAI TECHNO-SYSTEMS CO., LTD. 0 1 3 1 0 5
MEDIATEK INC. 0 0 3 2 0 5
MICRON ELECTRONICS, INC. 0 0 3 2 0 5
MINOLTA CAMERA CO., LTD. 0 0 0 2 3 5
MOTOROLA, INC. 2 2 1 0 0 5
MULTIDISC TECHNOLOGIES 2 3 0 0 0 5
SAMSUNG ELECTRO-MECHANICS CO., LTD. 0 1 1 2 1 5
WINBOND ELECTRONICS CORP. 0 0 1 2 2 5


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