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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 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 2000 2001 2002 2003 2004 Total
NORTEL NETWORKS LIMITED 63 105 123 151 173 615
LUCENT TECHNOLOGIES INC. 90 82 88 117 137 514
TELEFONAKTIEBOLAGET LM ERICSSON 68 63 91 117 127 466
CISCO TECHNOLOGY, INC. 31 47 75 142 167 462
NEC CORPORATION 72 66 106 102 86 432
FUJITSU LIMITED 60 62 89 92 88 391
INTERNATIONAL BUSINESS MACHINES CORPORATION 87 69 50 77 91 374
3COM CORPORATION 40 65 43 86 76 310
MOTOROLA, INC. 97 60 40 43 64 304
AT&T CORP. 41 43 63 49 58 254
SAMSUNG ELECTRONICS CO., LTD. 13 37 62 65 59 236
QUALCOMM, INC. 24 40 50 45 63 222
HITACHI, LTD 39 36 34 41 36 186
ALCATEL 12 32 30 43 68 185
ADVANCED MICRO DEVICES, INC. 51 21 23 26 55 176
SONY CORPORATION 22 35 38 38 36 169
~Individually Owned Patent 34 35 25 23 39 156
SIEMENS AKTIENGESELLSCHAFT 13 30 18 45 43 149
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 16 20 34 45 31 146
INTEL CORPORATION 9 10 22 34 55 130
NOKIA MOBILE PHONES LTD. 18 19 19 29 30 115
ERICSSON, INC. 19 15 25 27 27 113
TOSHIBA CORPORATION 19 18 21 28 24 110
SPRINT COMMUNICATIONS COMPANY L.P. 17 18 28 19 25 107
NOKIA CORPORATION 0 1 5 38 62 106
NOKIA TELECOMMUNICATIONS OY 25 25 23 23 4 100
INTERDIGITAL TECHNOLOGY CORPORATION 10 11 17 6 42 86
ALCATEL CANADA, INC. 0 10 21 30 19 80
SUN MICROSYSTEMS, INC. 20 10 6 21 21 78
ALCATEL USA SOURCING, L.P. 23 20 19 10 5 77
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 21 29 27 77
TEXAS INSTRUMENTS, INCORPORATED 4 11 21 14 19 69
SIEMENS INFORMATION AND COMMUNICATIONS NETWORKS, INC. 9 12 16 8 19 64
LG INFORMATION & COMMUNICATIONS, LTD. 7 4 9 20 23 63
CANON KABUSHIKI KAISHA 12 10 12 13 14 61
OKI ELECTRIC INDUSTRY CO., LTD. 10 14 13 14 9 60
MCI COMMUNICATIONS CORP. 15 15 9 4 9 52
MITSUBISHI DENKI KABUSHIKI KAISHA 5 9 14 14 9 51
FUJITSU NETWORK COMMUNICATIONS, INC. 2 10 18 12 7 49
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE 15 8 15 9 0 47
HYUNDAI ELECTRONICS INDUSTRIES CO., LTD. 8 8 9 10 9 44
BRITISH TELECOMMUNICATION, PLC 8 12 10 6 7 43
BROADCOM CORPORATION 3 3 6 9 22 43
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 0 23 19 42
HEWLETT-PACKARD COMPANY 9 15 14 3 0 41
GENESYS TELECOMMUNICATIONS LABORATORIES, INC. 5 8 13 8 6 40
AVAYA TECHNOLOGY CORP. 0 7 12 11 9 39
BELL ATLANTIC NETWORK SERVICES, INC. 19 15 4 1 0 39
LSI LOGIC CORPORATION 6 8 6 6 12 38
ADTRAN 4 4 13 9 5 35
HUGHES ELECTRONICS CORP. 2 6 9 6 12 35
QWEST COMMUNICATIONS INTERNATIONAL INC. 2 10 6 10 7 35
NTT MOBILE COMMUNICATIONS NETWORK INC. 13 8 3 7 3 34
U.S. PHILIPS CORPORATION 16 12 5 0 0 33
AGERE SYSTEMS INC. 0 0 0 16 16 32
CONEXANT SYSTEMS, INC. 2 7 9 6 7 31
PARADYNE CORPORATION 8 9 3 6 4 30
MICROSOFT CORPORATION 5 4 9 4 7 29
NOKIA NETWORKS OY 1 6 5 7 9 28
COMPAQ COMPUTER CORPORATION, INC. 7 12 7 1 0 27
PMC-SIERRA LTD. 5 5 7 4 6 27
VERIZON LABORATORIES INC. 0 11 4 8 4 27
CYPRESS SEMICONDUCTOR CORP. 6 3 3 8 6 26
MARCONI COMMUNICATIONS, INC. 0 3 9 8 6 26
TRW INC. 5 4 12 5 0 26
WORLDCOM, INC. 0 0 8 9 9 26
CABLETRON SYSTEMS, INC. 20 5 0 0 0 25
LG ELECTRONICS INC. 0 1 4 5 15 25
NIPPON TELEGRAPH & TELEPHONE CORP. 6 8 3 4 4 25
AGILENT TECHNOLOGIES, INC. 0 2 5 4 13 24
ATT WIRELESS SERVICES INC 3 3 4 2 12 24
YAZAKI CORP. 5 6 5 6 2 24
MICRON TECHNOLOGY, INC. 5 7 2 0 9 23
TELLABS OPERATIONS INC. 7 4 3 4 5 23
NORTHERN TELECOM LIMITED 9 5 6 2 0 22
TELCORDIA TECHNOLOGIES, INC. 3 1 7 7 4 22
3COM TECHNOLOGIES 3 6 5 7 0 21
SCIENTIFIC-ATLANTA, INC. 2 8 3 7 1 21
ENTERASYS NETWORKS, INC. 0 2 6 9 3 20
THOMSON LICENSING S.A. 1 2 4 4 9 20
VERTICAL NETWORKS, INC. 1 7 9 2 1 20
ADC TELECOMMUNICATIONS, INC. 2 3 8 3 3 19
EMULEX CORPORATION 4 8 3 2 2 19
HARRIS CORP. 2 3 2 3 8 18
NORTHROP GRUMMAN CORPORATION 1 4 0 4 9 18
ROCKWELL COLLINS, INC. 1 2 2 6 7 18
APPLE COMPUTER, INC. 3 2 2 4 6 17
CISCO SYSTEMS, INC. 7 4 2 3 1 17
MARCONI COMMUNICATIONS LIMITED 3 5 4 3 2 17
ROBERT BOSCH GMBH 3 5 3 3 3 17
TANTIVY COMMUNICATIONS, INC. 2 2 4 7 2 17
CIENA CORPORATION 0 0 1 3 12 16
FRANCE TELECOM 2 5 1 2 6 16
NEC USA, INC. 5 3 5 3 0 16
PLURIS, INC. 1 1 3 6 5 16
TRANSWITCH CORPORATION 1 3 2 6 4 16
BELLSOUTH INTELLECTUAL PROPERTY CORPORATION 1 0 3 7 4 15
GENERAL INSTRUMENT CORPORATION 0 3 2 1 9 15
SYNCHRODYNE, INC. 1 4 3 0 7 15
AGERE SYSTEMS GUARDIAN CORP. 0 4 10 0 0 14
LOCKHEED MARTIN CORPORATION 4 4 1 5 0 14
MCDATA CORPORATION 4 3 0 4 3 14
ASCEND COMMUNICATIONS, INC. 2 4 2 4 1 13
MINDSPEED TECHNOLOGIES, INC. 0 0 0 0 13 13
NATIONAL SEMICONDUCTOR CORPORATION 1 3 5 1 3 13
SONY INTERNATIONAL (EUROPE) GMBH 2 0 0 9 2 13
THOMSON-CSF 2 4 3 4 0 13
LEGERITY, INC. 0 2 4 5 1 12
NETWORK ASSOCIATES, INC. 0 1 0 2 9 12
TERAYON COMMUNICATION SYSTEMS, INC. 1 5 4 1 1 12
VERIZON SERVICES CORP. 0 0 2 8 2 12
ACCTON TECHNOLOGY CORP. 2 2 5 2 0 11
EXCEL SWITCHING CORPORATION 3 2 3 3 0 11
EXTREME NETWORKS, INC. 3 1 0 2 5 11
GLOBESPAN VIRATA, INC. 0 0 2 3 6 11
SBC TECHNOLOGY RESOURCES, INC. 1 2 3 0 5 11
UT STARCOM, INC. 0 1 0 5 5 11
AMERITECH CORPORATION 2 2 4 1 1 10
HITACHI TELECOM TECHNOLOGIES, LTD. 3 3 1 1 2 10
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 3 0 2 4 1 10
MCI WORLDCOM, INC. 1 1 8 0 0 10
MITEL CORPORATION 1 2 0 4 3 10
PHILIPS ELECTRONICS NORTH AMERICA CORP. 6 2 1 0 1 10
SANYO ELECTRIC CO., LTD. 0 1 3 5 1 10
SARNOFF CORPORATION & CO., LTD. 4 2 0 1 3 10
STMICROELECTRONICS, LTD. 0 0 1 4 5 10
TELECOMMUNICATIONS RESEARCH LABORATORIES 1 0 4 4 1 10
TELIA AB 4 1 2 1 2 10
UNITED STATES OF AMERICA, NAVY 0 1 2 6 1 10
VLSI TECHNOLOGY, INC. 4 4 2 0 0 10
CIRRUS LOGIC, INC. 0 2 4 3 0 9
GENERAL DATACOMM, INC. 8 1 0 0 0 9
OMNIPOINT CORPORATION 4 5 0 0 0 9
PACKETEER, INC. 4 3 1 0 1 9
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 1 4 1 0 3 9
SYMBOL TECHNOLOGIES, INC. 1 1 2 4 1 9
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 1 1 1 1 5 9
XEROX CORPORATION 4 0 2 2 1 9
YAMAHA CORPORATION 1 0 3 2 3 9
AIRSPAN NETWORKS, INC. 1 5 2 0 0 8
ALCATEL INTERNETWORKING (PE), INC. 1 1 3 3 0 8
ALCATEL USA, INC. 2 5 1 0 0 8
COVAD COMMUNICATIONS GROUP, INC. 1 0 2 4 1 8
EFFICIENT NETWORKS, INC. 3 0 0 4 1 8
FORE SYSTEMS, INC. 5 3 0 0 0 8
GOLDEN BRIDGE TECHNOLOGY, INC. 5 1 0 2 0 8
JUNIPER NETWORKS, INC. 0 0 1 4 3 8
NEWBRIDGE NETWORKS CORP. 4 3 1 0 0 8
NEXT LEVEL COMMUNICATIONS, INC. 5 2 1 0 0 8
NTT DOCOMO, INC. 1 0 0 2 5 8
ORCKIT COMMUNICATIONS LTD. 1 0 0 0 7 8
REDBACK NETWORKS INC. 0 0 1 5 2 8
SILICON GRAPHICS, INC. 1 2 0 1 4 8
STARGUIDE DIGITAL NETWORKS, INC. 3 3 2 0 0 8
TACHYON, INC. 0 0 1 4 3 8
VERIZON CORPORATE SERVICES GROUP INC. 0 0 1 3 4 8
AVICI SYSTEMS, INC. 0 1 2 3 1 7
DAEWOO ELECTRONICS COMPANY, LTD. 2 3 2 0 0 7
ECI TELECOM LTD. 0 0 1 2 4 7
ENSEMBLE COMMUNICATIONS, INC. 1 0 1 0 5 7
FRANCE TELECOM SA 1 1 3 2 0 7
INTERMEC IP CORP. 2 0 4 1 0 7
L-3 COMMUNICATIONS CORPORATION 3 0 0 1 3 7
LEVEL ONE COMMUNICATIONS, INC. 3 2 0 1 1 7
MASSACHUSETTS INSTITUTE OF TECHNOLOGY 2 2 1 1 1 7
MESHNETWORKS, INC. 0 0 0 0 7 7
MOSAID TECHNOLOGIES INC. 0 0 0 3 4 7
MULTI-TECH SYSTEMS, INC. 2 1 1 3 0 7
NEC ELECTRONICS CORPORATION 0 0 0 2 5 7
NETWORK EQUIPMENT TECHNOLOGIES 0 0 3 1 3 7
RAYTHEON COMPANY 1 1 0 1 4 7
STANFORD TELECOMMUNICATIONS, INC. 4 2 0 1 0 7
TEKTRONIX INC. 1 2 2 1 1 7
TELOGY NETWORKS INC. 0 1 2 3 1 7
U.S. WEST INC. 7 0 0 0 0 7
APPLIED MICRO CIRCUITS CORPORATION 0 0 2 1 3 6
ASPECT COMMUNICATIONS CORP. 0 0 1 2 3 6
AWARE, INC. 1 1 0 3 1 6
BROADCOM HOMENETWORKING, INC. 2 2 2 0 0 6
COMPAQ INFORMATION TECHNOLOGIES GROUP, L.P. 0 0 3 3 0 6
DENSO CORPORATION 1 1 1 2 1 6
DIVA SYSTEMS CORPORATION 0 2 2 1 1 6
GENERAL BANDWIDTH INC. 0 0 2 3 1 6
GTE LABORATORIES, INC. 6 0 0 0 0 6
HRL LABORATORIES, LLC 0 0 1 3 2 6
HYUNDAI ELECTRONICS AMERICA 3 0 2 1 0 6
INTELLON CORPORATION 0 2 1 3 0 6
ITT MANUFACTURING ENTERPRISES, INC. 2 1 3 0 0 6
KDD CORPORATION 0 0 0 3 3 6
KOKUSAI ELECTRIC CO., LTD. 0 0 2 0 4 6
METAWAVE COMMUNICATIONS CORPORATION 3 2 1 0 0 6
NCR CORPORATION 1 3 2 0 0 6
OPENWAVE SYSTEMS INC. 0 1 0 3 2 6
PIONEER ELECTRONIC CORPORATION 1 1 1 2 1 6
POLYTECHNIC UNIVERSITY 1 0 4 1 0 6
RIVERSTONE NETWORKS, INC. 0 0 2 1 3 6
SKYWORKS SOLUTIONS, INC. 0 0 2 2 2 6
TRIMBLE NAVIGATION, LTD. 0 1 1 2 2 6
ADAPTEC, INC. 1 1 2 1 0 5
AIRNET COMMUNICATIONS CORPORATION 2 1 1 0 1 5
ALCATEL CIT 2 0 2 1 0 5
ALCATEL NETWORKS CORPORATION 3 2 0 0 0 5
BOEING COMPANY 0 0 0 1 4 5
D.S.P.C. TECHNOLOGIES LTD. 3 0 2 0 0 5
DAEWOO TELECOM CO., LTD. 5 0 0 0 0 5
ELECTRONIC DATA SYSTEMS CORPORATION 0 0 5 0 0 5
FLARION TECHNOLOGIES, INC. 0 0 1 1 3 5
HARRIS BROADBAND WIRELESS ACCESS, INC. 0 0 2 2 1 5
HITACHI DENSHI KABUSHIKI KAISHA 0 1 2 2 0 5
HUBBELL INCORPORATED 2 1 2 0 0 5
HYBRID NETWORKS, INC. 2 1 1 1 0 5
INSTITUTE FOR INFORMATION INDUSTRY 0 0 3 0 2 5
INTERVOICE LIMITED PARTNERSHIP 0 2 1 1 1 5
IONICA INTERNATIONAL, LIMITED 5 0 0 0 0 5
KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA 1 2 2 0 0 5
MALIBU NETWORKS, INC. 0 0 1 3 1 5
MEDIARING.COM LTD. 0 1 2 1 1 5
MERLOT COMMUNICATIONS, INC. 0 1 0 4 0 5
NATURAL MICROSYSTEMS CORPORATION 2 2 1 0 0 5
NETRO CORPORATION 1 0 1 2 1 5
NETSPEAK CORPORATION 0 2 2 1 0 5
NOKIA INTERNET COMMUNICATIONS INC. 0 0 0 1 4 5
NOKIA IP, INC. 0 0 0 0 5 5
NOKIA TECHNOLOGY GMBH 1 2 0 0 2 5
PATH 1 NETWORK TECHNOLOGIES, INC. 1 1 0 1 2 5
RICOH COMPANY, LTD. 0 1 2 1 1 5
ROKE MANOR RESEARCH LIMITED 2 1 1 0 1 5
SGS-THOMSON MICROELECTRONICS LIMITED 3 1 1 0 0 5
SKYSTREAM CORPORATION 2 3 0 0 0 5
STMICROELECTRONICS, INC. 0 2 1 0 2 5
TELEDESIC LLC 4 0 1 0 0 5
TELXON CORPORATION 3 2 0 0 0 5
TUT SYSTEMS, INC. 0 1 1 1 2 5
UNISYS CORPORATION 1 1 2 1 0 5
VERIZON COMMUNICATIONS INC. 0 0 1 0 4 5
VIRATA LIMITED 3 0 1 0 1 5
VOCALTEC COMMUNICATIONS LTD. 0 1 1 1 2 5
WEBTV NETWORKS, INC. 1 0 0 4 0 5
WHITTAKER CORPORATION 4 0 0 1 0 5
WINBOND ELECTRONICS CORP. 2 0 2 1 0 5
XIRCOM WIRELESS, INC. 0 1 3 1 0 5


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