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

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2008 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 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Total
SONY CORPORATION 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 4 4 3 7 1 7 8 9 12 4 13 15 21 25 16 34 26 27 19 31 38 32 23 381
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 2 2 0 1 5 4 1 0 8 8 11 14 6 15 16 15 18 15 21 24 19 207
SAMSUNG ELECTRONICS CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 6 4 3 4 14 11 8 5 15 6 9 15 28 26 28 184
PIONEER ELECTRONIC CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 8 4 6 7 12 10 11 13 7 1 2 2 3 2 4 1 10 2 1 2 0 0 0 0 110
TEAC CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 2 1 2 2 0 2 2 2 8 6 7 3 6 6 9 7 2 6 75
~INDIVIDUALLY OWNED PATENT 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 1 1 1 1 1 2 1 0 0 3 3 1 5 4 5 2 6 6 7 8 6 1 7 75
TOSHIBA CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 3 1 1 3 6 3 4 2 3 0 0 2 2 16 1 2 3 4 0 0 4 2 2 2 70
U.S. PHILIPS CORPORATION 0 0 0 0 0 0 0 1 0 0 1 2 0 1 2 1 4 4 8 5 7 4 3 7 7 1 1 3 1 1 0 2 1 0 0 0 0 0 0 0 67
PIONEER CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9 10 5 9 13 9 9 65
LITE-ON IT CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 10 10 9 14 17 64
HITACHI, LTD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 1 1 2 3 1 1 3 2 4 4 6 7 7 2 6 2 2 4 61
MITSUBISHI DENKI KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 3 1 2 0 0 0 2 4 2 1 8 7 6 7 5 5 4 60
FUNAI ELECTRIC CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 2 4 5 6 15 13 11 59
LG ELECTRONICS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 4 11 5 7 2 4 4 10 51
FUJITSU LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 1 2 2 0 4 2 6 9 6 2 4 2 2 45
ALPS ELECTRIC CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 6 1 0 0 2 0 0 0 0 0 0 2 3 6 6 4 1 0 0 2 0 37
SANYO ELECTRIC CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 2 2 3 0 0 0 0 2 2 0 2 1 2 9 4 5 1 0 37
ALPINE ELECTRONICS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 1 2 0 0 0 0 0 3 1 1 4 2 1 6 2 4 2 4 35
DAEWOO ELECTRONICS COMPANY, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 10 12 3 3 1 0 0 0 0 0 0 0 0 34
BEN Q CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 9 11 4 3 31
MITSUMI ELECTRIC CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 1 0 4 2 6 2 0 4 5 1 4 0 31
CANON KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 2 3 0 4 2 1 0 0 2 1 0 1 0 1 1 2 4 1 30
RICOH COMPANY, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 1 1 2 0 1 3 3 3 1 1 0 0 0 2 2 5 2 30
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 1 0 0 0 0 2 0 1 1 3 0 1 0 0 1 0 0 5 2 3 4 4 30
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 5 4 3 6 3 6 29
TDK CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 1 0 2 0 0 2 0 1 0 1 4 3 1 1 1 4 3 2 29
HITACHI MAXELL, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 2 4 0 0 0 2 1 0 5 0 0 2 2 0 1 3 1 2 28
CLARION CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 1 2 0 1 1 0 1 0 0 4 3 3 2 2 3 0 27
NAKAMICHI CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 0 0 3 2 4 7 4 0 0 2 1 0 0 0 0 27
INTERNATIONAL BUSINESS MACHINES CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 0 0 0 2 1 2 4 2 1 2 0 1 1 0 0 1 1 0 3 25
NEC CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 2 4 2 5 0 3 1 3 3 0 0 25
TANASHIN DENKI CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 1 0 2 4 0 4 6 0 2 1 0 23
OLYMPUS OPTICAL CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 1 2 0 3 0 4 5 0 2 1 0 0 0 0 0 0 21
VICTOR COMPANY OF JAPAN, LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 2 0 1 0 0 1 1 0 0 0 0 0 0 0 0 4 1 0 0 0 0 1 3 2 1 21
HONG FU JIN PRECISION INDUSTRY (SHENZHEN) CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 11 20
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2 4 3 2 4 2 1 0 0 20
STAAR, S.A. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 7 2 3 0 2 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 0 20
EASTMAN KODAK COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 4 0 1 2 0 1 0 1 0 2 3 0 0 0 0 1 0 0 0 0 19
HEWLETT-PACKARD COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 1 1 1 6 5 0 0 0 0 0 0 17
KABUSHIKI KAISHA KENWOOD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 1 0 0 3 5 1 1 1 0 1 17
RCA CORPORATION 0 0 0 0 0 0 0 0 0 3 1 5 3 0 0 2 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 6 2 3 16
SAMSUNG ELECTRO-MECHANICS CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 3 5 0 3 3 16
FUJI PHOTO FILM CO., LTD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 4 5 0 0 15
ORION ELECTRIC CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 5 5 4 15
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 1 0 1 3 1 1 1 0 0 0 0 0 0 12
DEUTSCHE THOMSON-BRANDT GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 2 0 1 0 0 1 0 0 1 0 2 0 0 1 1 0 0 12
NIPPON GAKKI SEIZO KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 6 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
BEHAVIOR TECH COMPUTER CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 3 0 2 1 0 2 0 0 11
HON HAI PRECISION IND. CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 8 11
IMATION CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 1 1 1 2 1 0 1 1 11
SONY COMPUTER ENTERTAINMENT INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 2 0 1 1 2 11
THOMSON LICENSING S.A. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 3 2 2 11
ASUSTEK COMPUTER INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 2 3 1 9
DISCOVISION ASSOCIATES 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 2 1 0 1 0 0 0 0 0 0 9
DAI NIPPON INSATSU KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 3 1 0 2 0 0 0 0 0 0 0 0 0 0 8
MICRO-STAR INTERNATIONAL CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 2 0 1 8
STORAGE TECHNOLOGY CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 0 0 0 0 0 0 0 0 0 3 1 1 8
YAMAHA CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 2 0 1 1 0 0 0 0 0 1 8
GOLDSTAR COMPANY, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 2 2 1 0 0 0 0 0 0 0 0 0 0 0 7
IOMEGA CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 1 0 1 0 0 0 0 6
OPTICORD, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 0 6
QUANTA STORAGE, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 5 6
SEAGATE TECHNOLOGY, LLC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 6
ALCO ELECTRONICS, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 1 0 0 1 0 0 0 5
HITACHI-LG DATA STORAGE, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 5
LITERAL CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
SANKYO SEIKI MFG. CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 1 0 0 1 0 0 0 0 5
STORAGE TECHNOLOGY PARTNERS II 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 0 0 5
TAIYO YUDEN CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 1 0 5



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