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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 381, Electrical Audio Signal Processing Systems and Devices

( 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 60 43 68 67 68 306
SONY CORPORATION 20 9 9 13 16 67
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 9 4 12 13 13 51
NEW TRANSDUCERS LIMITED 3 18 10 9 7 47
SIEMENS AUDIOLOGISCHE TECHNIK GMBH 9 4 6 9 5 33
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 4 9 15 28
AMERICAN TECHNOLOGY CORPORATION 6 6 4 5 2 23
FUJITSU LIMITED 2 5 2 6 8 23
CITIZEN ELECTRONICS CO., LTD. 3 2 1 6 10 22
YAMAHA CORPORATION 6 1 3 4 8 22
PHONAK AG 1 1 2 7 10 21
ETYMOTIC RESEARCH, INC. 6 3 2 3 6 20
STAR MICRONICS CO., LTD. 5 0 2 5 8 20
PIONEER CORPORATION 0 1 0 5 13 19
SAMSUNG ELECTRONICS CO., LTD. 5 2 2 7 3 19
HARMAN INTERNATIONAL INDUSTRIES, INC. 0 4 5 4 5 18
MURATA MANUFACTURING CO., LTD. 5 1 3 6 3 18
NEC CORPORATION 3 6 2 2 3 16
U.S. PHILIPS CORPORATION 8 5 3 0 0 16
BOSE CORPORATION 1 2 2 2 8 15
SONIC INNOVATIONS, INC. 3 2 4 3 3 15
MOTOROLA, INC. 8 1 0 3 2 14
GN RESOUND AS 0 3 3 1 5 12
KABUSHIKI KAISHA AUDIO-TECHNICA 7 2 1 1 1 12
LUCENT TECHNOLOGIES INC. 6 0 1 3 2 12
TEXAS INSTRUMENTS, INCORPORATED 1 1 2 2 6 12
WIDEX A/S 0 0 0 3 9 12
PIONEER ELECTRONIC CORPORATION 3 2 4 1 1 11
CREATIVE TECHNOLOGY LIMITED 0 1 2 1 5 9
HARMAN AUDIO ELECTRONIC SYSTEMS GMBH 2 1 2 2 2 9
NOKIA MOBILE PHONES LTD. 1 3 1 1 3 9
THOMSON LICENSING S.A. 0 0 1 3 5 9
UNITED STATES OF AMERICA, NAVY 1 1 4 1 2 9
INTERNATIONAL BUSINESS MACHINES CORPORATION 1 1 4 1 1 8
JL AUDIO, INC. 0 2 2 3 1 8
TELEFONAKTIEBOLAGET LM ERICSSON 0 0 3 2 3 8
BELTONE ELECTRONICS CORPORATION 2 1 1 1 2 7
KNOWLES ELECTRONICS, LLC 0 1 0 3 3 7
MITSUBISHI DENKI KABUSHIKI KAISHA 1 1 0 1 4 7
SANYO ELECTRIC CO., LTD. 1 1 0 2 3 7
AKG ACOUSTICS GMBH 0 0 1 4 1 6
BERNAFON AG 2 1 1 2 0 6
COMPAQ COMPUTER CORPORATION, INC. 4 1 1 0 0 6
GN RESOUND NORTH AMERICA CORPORATION 0 0 1 3 2 6
INTEL CORPORATION 2 1 1 1 1 6
LG ELECTRONICS INC. 1 0 1 2 2 6
MICRO EAR TECHNOLOGY, INC. 0 0 4 1 1 6
RESOUND CORPORATION 4 1 1 0 0 6
SAMSUNG ELECTRO-MECHANICS CO., LTD. 0 0 2 3 1 6
SARNOFF CORPORATION & CO., LTD. 1 2 3 0 0 6
SENNHEISER ELECTRONIC GMBH & CO. KG 2 1 2 0 1 6
TOPHOLM & WESTERMANN APS 0 1 2 0 3 6
VISTEON GLOBAL TECHNOLOGIES, INC. 1 1 1 2 1 6
ACOUSTIC TECHNOLOGIES, INC. 1 3 0 1 0 5
ADVANCED MICRO DEVICES, INC. 2 3 0 0 0 5
ANDREA ELECTRONICS CORPORATION 1 2 1 1 0 5
CENTRAL RESEARCH LABORATORIES LIMITED 0 0 2 3 0 5
DSPFACTORY LTD. 1 2 1 1 0 5
GN NETCOM A/S 1 0 2 1 1 5
LAKE TECHNOLOGY LIMITED 0 0 0 1 4 5
NOISE CANCELLATION TECHNOLOGIES, INC. 2 3 0 0 0 5
OTICON A/S 0 0 0 2 3 5
PLANTRONICS INC 0 0 1 1 3 5
ROBERT BOSCH GMBH 0 0 0 3 2 5
SIEMENS HEARING INSTRUMENTS, INC. 2 0 0 1 2 5
TAKY ELECTRONICS CO., LTD. 0 1 3 0 1 5
VICTOR COMPANY OF JAPAN, LIMITED 2 0 0 2 1 5


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