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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 181, Acoustics

( 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
~Individually Owned Patent 38 54 53 31 35 211
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 3 6 2 3 2 16
NISSAN MOTOR COMPANY, LIMITED 4 2 2 1 1 10
OWENS-CORNING FIBERGLAS CORPORATION 0 2 3 2 1 8
SCHLUMBERGER TECHNOLOGY CORPORATION 1 1 0 3 3 8
ANDREAS STIHL AG & CO. 0 3 2 1 1 7
DONALDSON COMPANY, INC. 2 1 1 1 2 7
NORTHROP GRUMMAN CORPORATION 5 1 1 0 0 7
SONY CORPORATION 3 3 1 0 0 7
ARVIN INDUSTRIES, INC. 1 2 2 1 0 6
CASCADE ENGINEERING, INC. 3 1 2 0 0 6
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 0 0 2 1 3 6
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 2 2 1 1 0 6
WESTERN ATLAS INTERNATIONAL, INC. 1 1 2 2 0 6
HALLIBURTON ENERGY SEVICES, INC. 1 0 2 0 2 5
INSTITUT FRANCAIS DU PETROLE 0 1 1 2 1 5
MINNESOTA MINING AND MANUFACTURING COMPANY 3 2 0 0 0 5
SONIC INNOVATIONS, INC. 0 0 2 1 2 5
UNITED STATES OF AMERICA, NAVY 1 0 3 0 1 5


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
PK3- Suite 441; P.O Box 1450
Alexandria VA 22313

tel: (703) 306-2600
fax: (703) 306-2737
email: oeip@uspto.gov

address of PTMD pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


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