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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 379, Telephonic 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
~Individually Owned Patent 62 72 56 73 72 335
AT&T CORP. 56 66 66 29 43 260
LUCENT TECHNOLOGIES INC. 74 64 42 39 40 259
NORTEL NETWORKS LIMITED 51 44 31 41 43 210
BELLSOUTH INTELLECTUAL PROPERTY CORPORATION 9 11 15 33 75 143
AVAYA TECHNOLOGY CORP. 1 25 27 30 33 116
TELEFONAKTIEBOLAGET LM ERICSSON 22 21 20 23 25 111
INTERNATIONAL BUSINESS MACHINES CORPORATION 9 17 14 22 40 102
ALCATEL 15 15 13 22 24 89
SIEMENS AKTIENGESELLSCHAFT 14 10 21 19 24 88
NEC CORPORATION 14 18 18 16 21 87
AMERITECH CORPORATION 17 16 32 20 0 85
FUJITSU LIMITED 14 25 11 14 19 83
SIEMENS INFORMATION AND COMMUNICATIONS NETWORKS, INC. 16 14 16 12 25 83
SAMSUNG ELECTRONICS CO., LTD. 20 10 16 10 10 66
MCI COMMUNICATIONS CORP. 20 15 20 4 4 63
CISCO TECHNOLOGY, INC. 6 6 7 16 27 62
3COM CORPORATION 5 8 13 12 18 56
BRITISH TELECOMMUNICATION, PLC 13 15 10 9 6 53
ALCATEL USA SOURCING, L.P. 14 18 10 6 0 48
ERICSSON, INC. 17 11 9 7 4 48
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 3 8 10 12 15 48
SPRINT COMMUNICATIONS COMPANY L.P. 3 4 9 11 21 48
GENESYS TELECOMMUNICATIONS LABORATORIES, INC. 14 13 11 4 5 47
AGERE SYSTEMS INC. 0 0 2 21 23 46
SBC TECHNOLOGY RESOURCES, INC. 5 6 5 9 21 46
CONEXANT SYSTEMS, INC. 6 4 13 9 13 45
SBC PROPERTIES, L.P. 0 0 0 10 31 41
MOTOROLA, INC. 9 1 12 8 10 40
WORLDCOM, INC. 0 0 14 17 9 40
BELL ATLANTIC NETWORK SERVICES, INC. 15 16 5 0 2 38
QWEST COMMUNICATIONS INTERNATIONAL INC. 1 8 7 10 11 37
NOKIA CORPORATION 0 0 1 14 20 35
NOKIA MOBILE PHONES LTD. 6 8 3 9 8 34
INTEL CORPORATION 3 3 4 10 12 32
MITEL CORPORATION 6 3 5 8 7 29
CANON KABUSHIKI KAISHA 7 4 7 4 6 28
VERIZON SERVICES CORP. 0 0 6 4 17 27
TOSHIBA CORPORATION 3 5 7 4 7 26
NOKIA NETWORKS OY 0 6 12 3 4 25
AGERE SYSTEMS GUARDIAN CORP. 0 7 16 1 0 24
PARADYNE CORPORATION 5 5 2 5 7 24
LEGERITY, INC. 0 5 4 7 7 23
ADVANCED MICRO DEVICES, INC. 8 6 4 1 3 22
HARRIS CORP. 5 11 3 1 2 22
SILICON LABORATORIES INC. 4 5 5 4 4 22
NOKIA TELECOMMUNICATIONS OY 9 5 5 2 0 21
SONY CORPORATION 6 2 3 6 2 19
NORTHERN TELECOM LIMITED 16 2 0 0 0 18
OKI ELECTRIC INDUSTRY CO., LTD. 2 3 2 4 7 18
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 3 4 6 3 0 16
TELLABS OPERATIONS INC. 3 5 1 6 1 16
MICROSOFT CORPORATION 0 1 7 3 4 15
U.S. PHILIPS CORPORATION 11 4 0 0 0 15
UNISYS CORPORATION 1 4 3 4 3 15
WALKER DIGITAL, LLC 1 8 2 2 2 15
ADTRAN 0 2 0 8 4 14
HEWLETT-PACKARD COMPANY 2 4 5 3 0 14
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 2 5 7 14
MCI WORLDCOM, INC. 3 3 6 2 0 14
QUALCOMM, INC. 3 4 3 1 3 14
HITACHI, LTD 0 2 4 4 3 13
MITSUBISHI DENKI KABUSHIKI KAISHA 3 2 2 3 3 13
RONALD A. KATZ TECHNOLOGY LICENSING L.P. 4 1 5 2 1 13
MICROSTRATEGY, INC. 0 1 1 2 8 12
ROCKWELL ELECTRONIC COMMERCE CORP. 0 2 3 5 2 12
TELTRONICS, INC. 0 1 0 9 2 12
TEXAS INSTRUMENTS, INCORPORATED 2 4 1 2 3 12
VERIZON LABORATORIES INC. 0 1 4 3 4 12
BROTHER KOGYO KABUSHIKI KAISHA 5 3 2 1 0 11
CONCERTO SOFTWARE, INC. 0 0 1 2 8 11
DAVOX CORPORATION 4 3 4 0 0 11
DEUTSCHE TELEKOM AG 0 1 2 7 1 11
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 0 3 8 11
THOMSON LICENSING S.A. 1 2 3 4 1 11
ADC TELECOMMUNICATIONS, INC. 0 0 1 0 9 10
ASPECT COMMUNICATIONS CORP. 1 1 3 1 4 10
ATT WIRELESS SERVICES INC 0 1 3 4 2 10
HITACHI TELECOM TECHNOLOGIES, LTD. 2 1 3 1 3 10
MITEL KNOWLEDGE CORPORATION 0 0 3 1 6 10
TELCORDIA TECHNOLOGIES, INC. 3 3 0 1 3 10
TURNSTONE SYSTEMS, INC. 0 1 3 5 1 10
ULTRATEC, INC. 2 2 1 5 0 10
INFINEON TECHNOLOGIES AG 0 0 0 5 4 9
INTERVOICE LIMITED PARTNERSHIP 2 2 2 1 2 9
LG ELECTRONICS INC. 1 0 0 3 5 9
MCI, INC. 0 0 0 0 9 9
ROCKWELL INTERNATIONAL CORPORATION 4 4 0 1 0 9
SECURELOGIX CORPORATION 0 3 0 0 6 9
T-NETIX, INC. 1 0 1 6 1 9
WESTELL TECHNOLOGIES, INC. 3 4 1 0 1 9
WINBOND ELECTRONICS CORP. 2 2 1 3 1 9
A G COMMUNICATION SYSTEMS CORPORATION 3 1 2 0 2 8
ASPECT TELECOMMUNICATIONS CORPORATION 6 1 1 0 0 8
BELL CANADA 2 1 2 1 2 8
MUREX SECURITIES, LTD. 2 1 2 3 0 8
NEC AMERICA, INC. 0 0 4 3 1 8
SANYO ELECTRIC CO., LTD. 0 1 2 3 2 8
SNIP, INC. 3 1 2 2 0 8
TERADYNE, INC. 1 0 3 1 3 8
CONVERGYS CMG UTAH INC. 0 3 2 1 1 7
FRANCE TELECOM 1 1 2 1 2 7
GENERAL ELECTRIC COMPANY 0 0 2 1 4 7
INTERSIL CORPORATION, INC. 1 1 1 2 2 7
MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC. 0 1 4 2 0 7
RICOH COMPANY, LTD. 4 0 2 0 1 7
ROCKWELL SEMICONDUCTOR SYSTEMS, INC. 4 2 1 0 0 7
TEKELEC 1 1 0 3 2 7
U.S. WEST INC. 6 0 1 0 0 7
AMERICA ONLINE, INC. 0 0 0 4 2 6
CENTILLIUM COMMUNICATIONS, INC. 0 1 0 1 4 6
COMVERSE, LTD. 0 0 0 1 5 6
ECI TELECOM LTD. 0 0 1 2 3 6
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE 2 1 2 0 1 6
HELLO DIRECT, INC. 2 2 1 0 1 6
INET TECHNOLOGIES, INC. 1 1 2 2 0 6
KONINKLIJKE KPN N.V. 0 0 2 3 1 6
LG INFORMATION & COMMUNICATIONS, LTD. 2 0 0 2 2 6
METRO ONE TELECOMMUNICATIONS, INC. 0 0 2 1 3 6
NCR CORPORATION 1 3 2 0 0 6
NEC INFRONTIA CORPORATION 0 0 2 2 2 6
SPRINT SPECTRUM L.P. 0 0 0 3 3 6
TOLLGRADE COMMUNICATIONS, INC. 0 2 1 3 0 6
VERIZON CORPORATE SERVICES GROUP INC. 0 0 1 2 3 6
ZARLINK SEMICONDUCTOR INC. 0 0 0 4 2 6
BROADCOM CORPORATION 0 0 1 0 4 5
CHARLES INDUSTRIES, LTD. 0 0 3 1 1 5
COMVERSE, INC. 0 0 0 1 4 5
CONVERGYS CUSTOMER MANAGEMENT GROUP INC. 1 0 0 2 2 5
CYBIOTRONICS LIMITED 3 1 0 0 1 5
DENSO CORPORATION 1 0 3 1 0 5
INLINE CONNECTION CORPORATION 0 4 0 1 0 5
PITNEY-BOWES, INC. 0 0 2 1 2 5
PLANTRONICS INC 0 0 0 1 4 5
SER SOLUTIONS, INC. 0 5 0 0 0 5
SUN MICROSYSTEMS, INC. 0 2 2 0 1 5


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