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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 370, Multiplex Communications

( 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
NEC CORPORATION 77 87 72 66 106 408
LUCENT TECHNOLOGIES INC. 53 77 90 82 88 390
MOTOROLA, INC. 67 74 97 60 40 338
FUJITSU LIMITED 52 66 60 62 89 329
INTERNATIONAL BUSINESS MACHINES CORPORATION 50 55 87 69 50 311
NORTEL NETWORKS CORPORATION 0 15 63 105 124 307
TELEFONAKTIEBOLAGET LM ERICSSON 38 47 66 63 91 305
AT&T CORP. 12 33 41 43 63 192
3COM CORPORATION 9 28 40 65 43 185
CISCO TECHNOLOGY, INC. 9 18 31 47 75 180
HITACHI, LTD 29 28 39 36 34 166
~Individually Owned Patent 33 28 34 35 25 155
QUALCOMM, INC. 17 23 24 40 50 154
SAMSUNG ELECTRONICS CO., LTD. 7 17 13 37 62 136
SONY CORPORATION 14 21 22 35 38 130
NOKIA TELECOMMUNICATIONS OY 21 28 25 25 23 122
ADVANCED MICRO DEVICES, INC. 7 18 51 21 24 121
SIEMENS AKTIENGESELLSCHAFT 21 24 13 30 18 106
ERICSSON, INC. 22 20 19 15 25 101
TOSHIBA CORPORATION 22 14 19 18 21 94
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 15 5 16 20 34 90
NOKIA MOBILE PHONES LTD. 11 21 18 19 19 88
ALCATEL USA SOURCING, L.P. 0 22 23 20 19 84
NORTHERN TELECOM LIMITED 16 45 9 5 6 81
MCI COMMUNICATIONS CORP. 24 16 15 15 9 79
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE 17 22 15 8 15 77
ALCATEL 0 2 12 32 30 76
SPRINT COMMUNICATIONS COMPANY L.P. 2 5 17 18 28 70
MITSUBISHI DENKI KABUSHIKI KAISHA 13 14 5 8 14 54
U.S. PHILIPS CORPORATION 13 8 16 12 5 54
INTEL CORPORATION 6 6 9 10 22 53
HEWLETT-PACKARD COMPANY 10 4 9 15 14 52
BELL ATLANTIC NETWORK SERVICES, INC. 11 2 19 15 4 51
CANON KABUSHIKI KAISHA 7 9 12 10 12 50
FUJITSU NETWORK COMMUNICATIONS, INC. 4 14 2 10 18 48
INTERDIGITAL TECHNOLOGY CORPORATION 4 6 10 11 17 48
SUN MICROSYSTEMS, INC. 4 7 20 10 6 47
CABLETRON SYSTEMS, INC. 8 13 20 5 0 46
OKI ELECTRIC INDUSTRY CO., LTD. 3 5 10 14 13 45
SIEMENS INFORMATION AND COMMUNICATIONS NETWORKS, INC. 0 8 9 12 16 45
NTT MOBILE COMMUNICATIONS NETWORK INC. 9 10 13 8 3 43
BRITISH TELECOMMUNICATION, PLC 6 5 8 12 10 41
LSI LOGIC CORPORATION 10 11 6 8 6 41
TEXAS INSTRUMENTS, INCORPORATED 1 1 4 11 21 38
COMPAQ COMPUTER CORPORATION, INC. 7 4 7 12 7 37
ADTRAN 5 8 4 4 13 34
PARADYNE CORPORATION 6 6 8 9 3 32
ALCATEL CANADA, INC. 0 0 0 10 21 31
GENESYS TELECOMMUNICATIONS LABORATORIES, INC. 0 2 5 8 13 28
HUGHES ELECTRONICS CORP. 5 6 2 6 9 28
HYUNDAI ELECTRONICS INDUSTRIES CO., LTD. 3 0 8 8 9 28
MICROSOFT CORPORATION 4 3 5 4 9 25
ALCATEL N. V. 19 5 0 0 0 24
NIPPON TELEGRAPH & TELEPHONE CORP. 4 3 6 8 3 24
PMC-SIERRA LTD. 4 2 5 5 7 23
TRW INC. 0 2 5 4 12 23
CISCO SYSTEMS, INC. 6 3 7 4 2 22
CONEXANT SYSTEMS, INC. 0 4 2 7 9 22
LG INFORMATION & COMMUNICATIONS, LTD. 1 1 7 4 9 22
LOCKHEED MARTIN CORPORATION 6 7 4 4 1 22
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 0 0 21 21
OMNIPOINT CORPORATION 8 3 4 5 0 20
YAZAKI CORP. 0 4 5 6 5 20
AVAYA TECHNOLOGY CORP. 0 0 0 7 12 19
CYPRESS SEMICONDUCTOR CORP. 4 2 6 3 3 18
NEC USA, INC. 2 3 5 3 5 18
SCIENTIFIC-ATLANTA, INC. 3 2 2 8 3 18
BAY NETWORKS, INC. 10 7 0 0 0 17
DSC COMMUNICATIONS CORPORATION 15 1 1 0 0 17
GENERAL DATACOMM, INC. 3 5 8 1 0 17
NEWBRIDGE NETWORKS CORP. 4 5 4 3 1 17
QWEST COMMUNICATIONS INTERNATIONAL INC. 0 0 2 10 5 17
TELLABS OPERATIONS INC. 2 1 7 4 3 17
VERTICAL NETWORKS, INC. 0 0 1 7 9 17
ATT WIRELESS SERVICES INC 2 4 3 3 4 16
EMULEX CORPORATION 0 1 4 8 3 16
MICRON TECHNOLOGY, INC. 2 0 5 7 2 16
TELIA AB 4 5 4 1 2 16
NATIONAL SEMICONDUCTOR CORPORATION 6 0 1 3 5 15
ROBERT BOSCH GMBH 0 4 3 5 3 15
STANFORD TELECOMMUNICATIONS, INC. 4 5 4 2 0 15
THOMSON-CSF 5 1 2 4 3 15
VERIZON LABORATORIES INC. 0 0 0 11 4 15
3COM TECHNOLOGIES 0 0 3 6 5 14
AGERE SYSTEMS GUARDIAN CORP. 0 0 0 4 10 14
ASCEND COMMUNICATIONS, INC. 1 5 2 4 2 14
EXCEL SWITCHING CORPORATION 1 5 3 2 3 14
FORE SYSTEMS, INC. 1 5 5 3 0 14
MARCONI COMMUNICATIONS LIMITED 0 2 3 5 4 14
MCI WORLDCOM, INC. 0 4 1 1 8 14
PHILIPS ELECTRONICS NORTH AMERICA CORP. 3 2 6 2 1 14
VLSI TECHNOLOGY, INC. 1 3 4 4 2 14
XEROX CORPORATION 2 6 4 0 2 14
ADC TELECOMMUNICATIONS, INC. 0 0 2 3 8 13
HARRIS CORP. 5 1 2 3 2 13
MULTI-TECH SYSTEMS, INC. 7 2 2 1 1 13
TERAYON COMMUNICATION SYSTEMS, INC. 1 2 1 5 4 13
APPLE COMPUTER, INC. 4 1 3 2 2 12
BROADCOM CORPORATION 0 0 3 3 6 12
DAEWOO TELECOM CO., LTD. 2 5 5 0 0 12
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 3 4 3 0 2 12
MARCONI COMMUNICATIONS, INC. 0 0 0 3 9 12
U.S. WEST INC. 3 2 7 0 0 12
ALCATEL USA, INC. 0 3 2 5 1 11
HITACHI TELECOM TECHNOLOGIES, LTD. 1 3 3 3 1 11
HYBRID NETWORKS, INC. 2 5 2 1 1 11
LEVEL ONE COMMUNICATIONS, INC. 5 1 3 2 0 11
NOKIA NETWORKS OY 0 0 1 5 5 11
SQUARE D COMPANY 6 4 1 0 0 11
TELCORDIA TECHNOLOGIES, INC. 0 0 3 1 7 11
ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE 2 8 0 0 0 10
FRANCE TELECOM 2 2 1 4 1 10
MCDATA CORPORATION 2 1 4 3 0 10
MITEL CORPORATION 1 6 1 2 0 10
NCR CORPORATION 1 3 1 3 2 10
NEXT LEVEL COMMUNICATIONS, INC. 1 1 5 2 1 10
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 1 3 1 4 1 10
TEKTRONIX INC. 1 4 1 2 2 10
ZENITH ELECTRONICS CORPORATION 1 6 3 0 0 10
ACCTON TECHNOLOGY CORP. 0 0 2 2 5 9
AMERITECH CORPORATION 0 1 2 2 4 9
DAEWOO ELECTRONICS COMPANY, LTD. 0 2 2 3 2 9
GENERAL INSTRUMENT CORPORATION 2 2 0 3 2 9
GPT LTD. 3 6 0 0 0 9
GTE LABORATORIES, INC. 1 2 6 0 0 9
AIRSPAN NETWORKS, INC. 0 0 1 5 2 8
ALCATEL NETWORK SYSTEMS, INC. 5 3 0 0 0 8
CASCADE COMMUNICATIONS CORP. 2 2 2 1 1 8
CIRRUS LOGIC, INC. 1 1 0 2 4 8
ENTERASYS NETWORKS, INC. 0 0 0 2 6 8
L-3 COMMUNICATIONS CORPORATION 1 4 3 0 0 8
PACKETEER, INC. 0 0 4 3 1 8
SANYO ELECTRIC CO., LTD. 3 1 0 1 3 8
STARGUIDE DIGITAL NETWORKS, INC. 0 0 3 3 2 8
SYNCHRODYNE, INC. 0 0 1 4 3 8
TANTIVY COMMUNICATIONS, INC. 0 0 2 2 4 8
TRANSWITCH CORPORATION 1 1 1 3 2 8
UNITED STATES OF AMERICA, NAVY 2 3 0 1 2 8
WORLDCOM, INC. 0 0 0 0 8 8
YAMAHA CORPORATION 2 2 1 0 3 8
AGILENT TECHNOLOGIES, INC. 0 0 0 2 5 7
ALCATEL CIT 3 0 2 0 2 7
EXTREME NETWORKS, INC. 0 3 3 1 0 7
GOLDEN BRIDGE TECHNOLOGY, INC. 0 1 5 1 0 7
HUBBELL INCORPORATED 2 0 2 1 2 7
HYUNDAI ELECTRONICS AMERICA 1 1 3 0 2 7
KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA 2 0 1 2 2 7
KONINKLIJKE PTT NEDERLAND N.V. 5 2 0 0 0 7
LG ELECTRONICS INC. 2 0 0 1 4 7
MADGE NETWORKS LIMITED 2 2 1 2 0 7
METAWAVE COMMUNICATIONS CORPORATION 0 1 3 2 1 7
NORTHROP GRUMMAN CORPORATION 0 2 1 4 0 7
ROCKWELL INTERNATIONAL CORPORATION 4 1 2 0 0 7
ROKE MANOR RESEARCH LIMITED 1 2 2 1 1 7
SARNOFF CORPORATION & CO., LTD. 0 1 4 2 0 7
TELXON CORPORATION 1 1 3 2 0 7
THOMSON LICENSING S.A. 0 0 1 2 4 7
VICTOR COMPANY OF JAPAN, LIMITED 3 3 1 0 0 7
AIRSPAN COMMUNICATIONS CORPORATION 0 2 4 0 0 6
APPLIED DIGITAL ACCESS, INC. 3 1 1 0 1 6
BROADCOM HOMENETWORKING, INC. 0 0 2 2 2 6
DIGITAL EQUIPMENT CORPORATION 3 2 1 0 0 6
INTERMEC IP CORP. 0 0 2 0 4 6
IONICA INTERNATIONAL, LIMITED 0 1 5 0 0 6
ITT MANUFACTURING ENTERPRISES, INC. 0 0 2 1 3 6
LEGERITY, INC. 0 0 0 2 4 6
MAKER COMMUNICATIONS, INC. 2 1 3 0 0 6
MMC NETWORKS, INC. 0 2 3 1 0 6
NOKIA CORPORATION 0 0 0 1 5 6
PLURIS, INC. 0 1 1 1 3 6
SBC TECHNOLOGY RESOURCES, INC. 0 0 1 2 3 6
SGS-THOMSON MICROELECTRONICS LIMITED 0 1 3 1 1 6
TELECOMMUNICATIONS RESEARCH LABORATORIES 0 1 1 0 4 6
TELEDESIC LLC 0 1 4 0 1 6
TELOGY NETWORKS INC. 1 2 0 1 2 6
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 1 2 1 1 1 6
WASHINGTON UNIVERSITY 1 1 2 1 1 6
WORLDSPACE INTERNATIONAL NETWORK, INC. 1 3 1 1 0 6
ADAPTEC, INC. 0 1 1 1 2 5
AIRNET COMMUNICATIONS CORPORATION 0 1 2 1 1 5
ALCATEL INTERNETWORKING (PE), INC. 0 0 1 1 3 5
ALCATEL NETWORKS CORPORATION 0 0 3 2 0 5
ALOHA NETWORKS, INC. 1 0 2 2 0 5
AMSC SUBSIDIARY CORPORATION 0 4 1 0 0 5
ANALOG DEVICES, INC. 2 1 0 1 1 5
ASCOM TECH AG. 2 1 2 0 0 5
BBN CORPORATION 1 0 3 1 0 5
BELL COMMUNICATIONS RESEARCH, INC. 4 1 0 0 0 5
BELLSOUTH INTELLECTUAL PROPERTY MANAGMENT CORPORATION 0 1 1 0 3 5
COM21, INC. 0 2 3 0 0 5
D.S.P.C. TECHNOLOGIES LTD. 0 0 3 0 2 5
DEUTSCHE TELEKOM AG 0 2 0 2 1 5
ELECTRONIC DATA SYSTEMS CORPORATION 0 0 0 0 5 5
FRANCE TELECOM SA 0 0 1 1 3 5
GLENAYRE ELECTRONICS, INC. 0 1 1 2 1 5
HITACHI DENSHI KABUSHIKI KAISHA 1 1 0 1 2 5
JOHN FLUKE MFG. CO., INC. 0 4 0 1 0 5
MASSACHUSETTS INSTITUTE OF TECHNOLOGY 0 0 2 2 1 5
MEDIAONE GROUP, INC. 0 1 2 0 2 5
MITSUBISHI ELECTRIC INFORMATION TECHNOLOGY CENTER AMERICA, INC. (ITA) 3 2 0 0 0 5
NATURAL MICROSYSTEMS CORPORATION 0 0 2 2 1 5
NORAND CORPORATION 4 1 0 0 0 5
PIONEER ELECTRONIC CORPORATION 2 0 1 1 1 5
POLYTECHNIC UNIVERSITY 0 0 1 0 4 5
RAYTHEON COMPANY 1 2 1 1 0 5
RICOH COMPANY, LTD. 1 1 0 1 2 5
ROCKWELL COLLINS, INC. 0 0 1 2 2 5
SKYSTREAM CORPORATION 0 0 2 3 0 5
THOMSON MULTIMEDIA S.A. 1 4 0 0 0 5
UNISYS CORPORATION 1 0 1 1 2 5
VIRATA LIMITED 0 1 3 0 1 5
WHITTAKER CORPORATION 0 1 4 0 0 5


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Skip menu navigation Home > PTMD Home > PTMD Listing of Viewable Reports > Table of Contents for This Set of Reports