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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Branch (PTMB)

Patenting In Technology Classes,
Breakout By Organization

Count of 2001 - 2005 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 720, Dynamic Optical Information Storage or Retrieval

( 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 2001 2002 2003 2004 2005 Total
SONY CORPORATION 34 26 27 19 31 137
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 15 16 15 18 15 79
SAMSUNG ELECTRONICS CO., LTD. 5 15 6 9 15 50
PIONEER CORPORATION 1 9 10 5 9 34
TEAC CORPORATION 7 3 6 6 9 31
LG ELECTRONICS INC. 4 11 5 7 2 29
MITSUBISHI DENKI KABUSHIKI KAISHA 1 8 7 6 7 29
~Individually Owned Patent 2 6 6 7 8 29
HITACHI, LTD 6 7 7 2 6 28
FUJITSU LIMITED 2 6 9 6 2 25
LITE-ON IT CORPORATION 0 1 3 10 10 24
SANYO ELECTRIC CO., LTD. 2 1 2 9 4 18
ALPS ELECTRIC CO., LTD. 6 6 4 1 0 17
FUNAI ELECTRIC CO., LTD. 0 2 4 5 6 17
MITSUMI ELECTRIC CO., LTD. 6 2 0 4 5 17
ALPINE ELECTRONICS INC. 4 2 1 6 2 15
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 4 3 2 4 2 15
PIONEER ELECTRONIC CORPORATION 10 2 1 2 0 15
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 2 5 4 3 14
TANASHIN DENKI CO., LTD. 4 0 4 6 0 14
BEN Q CORPORATION 0 0 2 2 9 13
CLARION CO., LTD. 0 4 3 3 2 12
NEC CORPORATION 5 0 3 1 3 12
HEWLETT-PACKARD COMPANY 6 5 0 0 0 11
TOSHIBA CORPORATION 3 4 0 0 4 11
FUJI PHOTO FILM CO., LTD 0 0 0 6 4 10
KABUSHIKI KAISHA KENWOOD 0 3 5 1 1 10
TDK CORPORATION 4 3 1 1 1 10
SAMSUNG ELECTRO-MECHANICS CO., LTD. 1 0 0 3 5 9
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 1 0 0 5 2 8
SONY COMPUTER ENTERTAINMENT INC. 0 2 3 2 0 7
BEHAVIOR TECH COMPUTER CORP. 3 0 2 1 0 6
IMATION CORP. 1 1 1 2 1 6
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 0 2 3 5
HITACHI MAXELL, LTD. 0 2 2 0 1 5
MICRO-STAR INTERNATIONAL CO., LTD. 0 0 0 1 4 5
SEAGATE TECHNOLOGY, LLC 1 1 1 1 1 5


PTMB Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMB
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

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


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