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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 - 2007 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 520, Synthetic Resins or Natural Rubbers (includes Classes 520-528)

( 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 Total
BAYER AKTIENGESELLSCHAFT 86 84 75 105 74 86 98 99 87 112 94 121 133 86 111 106 94 117 96 131 114 132 143 146 129 89 82 75 90 100 68 62 74 87 124 130 48 45 10 3743
GENERAL ELECTRIC COMPANY 60 40 28 59 80 90 50 74 59 124 70 83 120 87 103 120 143 104 113 116 136 108 130 125 110 100 101 100 86 75 89 83 100 121 93 73 45 61 54 3513
~INDIVIDUALLY OWNED PATENT 59 68 101 158 103 131 102 69 84 111 66 94 114 79 77 71 71 47 53 61 67 79 94 102 106 80 90 81 77 118 98 80 94 86 106 57 55 56 51 3296
E. I. DU PONT DE NEMOURS AND COMPANY 139 119 80 148 99 114 114 88 75 70 44 59 66 69 76 63 68 56 79 75 65 81 92 107 105 101 90 61 72 102 91 78 92 85 89 65 51 78 53 3259
DOW CHEMICAL COMPANY 75 66 60 105 72 87 73 63 78 75 45 47 62 70 82 85 114 137 151 127 120 121 113 129 136 100 88 65 54 67 59 61 79 60 27 8 3 3 1 2968
BASF AKTIENGESELLSCHAFT 22 18 27 55 18 30 25 53 66 42 31 35 52 31 51 46 47 49 53 76 74 74 90 94 82 95 71 81 69 112 90 123 131 102 103 93 45 52 39 2447
SHELL OIL COMPANY 61 26 42 46 29 19 13 25 17 40 9 12 16 25 28 20 26 21 16 43 120 93 102 113 100 84 56 46 51 60 61 50 47 8 11 4 0 5 5 1550
PHILLIPS PETROLEUM COMPANY 94 65 64 88 67 79 65 56 61 68 34 30 47 27 54 68 44 24 22 14 25 16 49 50 68 63 43 22 15 14 9 16 27 15 21 8 7 5 0 1544
CIBA-GEIGY CORPORATION 4 7 11 23 21 31 35 68 48 91 50 62 66 41 46 39 52 36 53 44 61 63 78 67 66 66 43 46 33 1 0 0 0 0 0 0 0 0 0 1352
GOODYEAR TIRE + RUBBER COMPANY 28 25 29 48 20 32 44 49 40 42 24 29 25 18 29 38 27 17 18 22 30 27 33 32 37 31 21 33 39 50 39 42 57 50 44 28 21 38 23 1279
HOECHST AKTIENGESELLSCHAFT 32 29 53 50 22 27 36 59 40 55 35 30 29 15 35 31 24 11 23 15 31 22 36 48 48 58 49 59 57 45 19 8 3 1 0 0 0 0 0 1135
SUMITOMO CHEMICAL COMPANY, LIMITED 9 8 8 35 16 21 29 29 24 30 16 21 23 23 15 19 16 13 23 30 34 30 52 54 44 50 48 41 33 32 28 29 35 41 47 39 23 21 27 1116
MONSANTO COMPANY, INC. 85 61 75 85 35 50 48 42 39 80 36 61 58 39 32 21 26 22 13 3 18 15 25 19 18 12 7 8 9 6 9 6 5 0 1 0 0 0 0 1069
SHIN ETSU CHEMICAL CO., LTD. 0 3 2 8 5 7 8 11 8 8 9 8 12 7 5 5 9 17 23 33 25 25 60 70 85 79 72 59 40 38 31 45 49 36 26 40 23 27 23 1041
DOW CORNING CORPORATION 24 16 25 33 20 11 14 14 21 23 9 13 26 12 13 25 23 41 21 33 42 49 43 45 33 34 36 44 37 53 57 38 29 22 17 23 4 6 3 1032
EASTMAN KODAK COMPANY 48 45 30 43 25 19 28 20 28 29 36 27 37 33 22 34 29 27 15 26 45 56 59 45 74 30 9 5 4 6 10 12 6 12 16 9 8 8 9 1024
IMPERIAL CHEMICAL INDUSTRIES PLC 37 37 38 67 44 46 32 54 45 42 20 24 29 19 26 30 22 11 12 22 18 27 29 25 26 18 22 23 19 15 16 15 13 10 10 9 3 1 0 956
ROHM AND HAAS COMPANY 14 12 3 22 16 21 14 20 27 32 32 27 28 19 20 20 9 10 5 9 8 10 15 24 53 58 48 45 19 15 18 24 28 25 30 42 36 34 29 921
UNION CARBIDE CORPORATION 63 44 35 67 50 45 45 32 36 48 34 42 59 38 39 34 56 45 32 23 32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 899
MINNESOTA MINING AND MANUFACTURING COMPANY 15 20 21 27 23 27 16 22 16 11 6 7 29 14 16 25 19 23 22 26 33 24 32 41 49 55 56 62 60 60 35 0 1 1 0 0 1 0 0 895
HOECHST CELANESE CORPORATION 25 26 19 31 27 20 19 14 22 26 10 18 14 27 24 42 18 22 24 20 41 58 46 41 34 20 16 19 16 10 6 2 1 0 0 0 0 0 0 758
B. F. GOODRICH CO. 23 17 17 36 22 15 38 30 35 31 19 25 36 24 32 32 23 9 30 27 26 29 25 32 29 17 7 9 3 9 9 9 10 3 0 0 0 0 0 738
EXXON RESEARCH + ENGINEERING CO. 39 24 17 26 18 20 34 31 35 40 38 31 28 26 23 24 42 26 36 21 25 19 21 15 5 14 3 4 7 4 2 9 1 1 0 0 0 0 0 709
PPG INDUSTRIES INC. 30 11 9 26 16 13 17 29 31 31 14 23 26 27 36 34 27 29 22 21 24 16 19 26 29 22 13 12 25 21 8 0 0 0 0 0 0 1 0 688
ALLIED-SIGNAL INC. 50 33 23 43 33 26 25 12 13 18 15 14 7 22 22 18 16 15 14 23 24 19 19 29 13 22 18 24 11 7 11 8 10 5 3 1 0 0 0 666
ASAHI KASEI KOGYO KABUSHIKI KAISHA 11 8 11 21 7 9 12 15 5 7 4 14 7 23 20 14 17 8 13 21 17 12 15 12 20 20 6 7 7 20 19 21 19 27 17 23 16 12 11 548
BRIDGESTONE CORPORATION 1 7 6 6 4 13 13 13 7 9 3 10 8 3 8 8 9 7 10 11 9 11 8 14 15 10 16 29 12 15 33 26 51 47 26 18 10 13 16 535
BASF CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 9 15 21 15 15 24 48 25 24 42 34 27 27 27 21 36 28 29 21 16 15 525
AMERICAN CYANAMID COMPANY 28 38 23 41 31 34 23 32 27 31 11 19 24 12 15 14 20 16 7 12 8 12 8 13 13 7 1 1 1 0 0 0 0 0 0 0 0 0 0 522
HERCULES INCORPORATED 26 22 13 44 19 14 21 18 14 16 5 4 16 10 17 13 15 15 20 13 17 12 23 15 9 9 6 8 7 6 3 8 9 8 3 3 3 1 0 485
WACKER-CHEMIE GMBH 8 3 8 18 6 17 9 9 8 13 4 11 8 14 10 4 13 3 8 9 18 14 12 9 12 16 14 9 18 19 26 24 41 16 16 6 5 19 4 481
3M INNOVATIVE PROPERTIES COMPANY 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 20 37 43 67 74 67 42 42 45 437
MITSUI PETROCHEMICAL INDUSTRIES LTD. 3 1 1 4 6 7 5 6 3 9 10 13 11 8 11 9 11 8 11 15 15 28 33 20 36 34 24 20 36 27 5 6 0 0 0 0 0 0 0 436
MITSUI TOATSU CHEMICALS INC. 0 1 0 2 2 1 2 5 7 5 4 7 5 6 11 5 4 8 12 15 13 23 26 48 50 37 40 37 31 17 0 1 0 0 0 0 1 0 0 426
FIRESTONE TIRE & RUBBER CO. 13 17 23 26 25 21 34 34 16 19 22 40 20 13 17 16 17 19 10 15 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 424
EXXON CHEMICALS PATENTS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 7 15 18 34 22 35 38 38 42 44 39 22 33 18 2 0 0 0 0 1 417
AIR PRODUCTS AND CHEMICALS, INC. 1 3 2 8 10 15 9 3 3 7 8 3 5 5 4 10 5 4 14 11 14 21 11 21 19 32 17 19 18 17 17 25 15 7 1 11 5 2 5 407
EASTMAN CHEMICAL COMPANY 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 30 46 26 31 8 38 49 47 41 28 21 8 5 28 407
AMOCO CORPORATION 0 0 0 0 0 0 0 0 20 18 15 18 16 22 18 15 7 5 20 25 29 40 21 43 21 15 7 12 9 5 1 0 0 0 0 0 0 0 0 402
MITSUBISHI RAYON CO., LTD. 2 4 2 8 4 17 13 11 7 6 5 3 4 4 1 10 21 7 20 18 17 27 33 30 24 25 6 7 4 1 7 5 8 10 8 8 6 5 3 401
KANEGAFUCHI CHEMICAL INDUSTRY CO., LTD. 3 7 5 11 4 3 5 12 8 2 3 4 3 9 11 28 25 11 15 20 14 25 18 17 12 27 13 8 17 14 7 5 2 1 1 0 0 0 0 370
MOBIL OIL CORP. 13 12 6 10 6 5 8 12 10 18 11 10 13 18 12 23 14 23 13 13 19 10 16 15 8 13 10 12 3 6 4 2 2 0 0 0 0 0 0 370
DAIKIN INDUSTRIES LIMITED 2 3 4 3 6 2 4 3 1 3 7 2 12 5 4 7 16 9 14 3 8 12 10 19 12 5 7 2 11 13 11 13 19 15 23 26 17 13 19 365
CIBA SPECIALTY CHEMICALS 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 5 49 39 44 35 41 37 31 24 26 32 363
MITSUI CHEMICALS, INCORPORATED 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 43 48 46 49 32 34 27 23 20 331
W. R. GRACE & CO.-CONN. 17 27 23 22 18 9 11 9 9 8 9 4 8 9 9 12 11 6 7 5 7 5 6 10 10 8 7 11 7 5 3 0 2 3 2 6 6 0 0 331
KURARAY CO., LTD. 0 0 1 8 4 3 7 4 1 4 2 4 5 6 7 4 9 6 10 3 10 7 10 10 9 16 11 10 9 17 10 9 10 18 14 20 15 21 5 319
KANSAI PAINT CO., LTD. 0 1 2 2 5 4 10 11 7 7 2 4 5 7 4 5 3 3 2 7 4 16 18 17 14 20 17 9 11 14 11 15 11 12 9 16 6 4 2 317
NIPPON PAINT CO., LTD. 1 2 0 1 2 2 1 4 2 5 2 4 1 4 5 7 12 7 7 13 18 10 16 15 23 26 20 21 12 16 11 4 5 10 7 10 1 4 1 312
DOW CORNING TORAY SILICONE COMPANY LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 8 14 19 26 21 21 21 25 43 23 32 19 12 5 1 5 8 306
CHEMISCHE WERKE HULS, AG 23 14 12 16 14 27 13 19 14 15 13 23 10 20 16 19 19 5 4 3 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 301
MITSUBISHI GAS-CHEMICAL COMPANY, INC. 0 0 0 0 0 4 7 11 8 6 3 7 10 9 18 9 10 6 8 2 8 12 11 7 4 8 12 7 6 9 9 3 13 11 15 10 6 19 13 301
NIPPON ZEON CO., LTD. 0 0 0 0 2 4 6 7 8 6 4 7 12 9 11 5 10 11 11 2 8 13 19 18 20 16 12 10 8 8 8 16 11 11 1 3 0 0 0 297
NATIONAL STARCH AND CHEMICAL INVESTMENT HOLDING CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 16 10 17 19 18 20 13 16 26 14 16 18 19 18 8 12 12 278
IDEMITSU PETROCHEMICAL COMPANY LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 3 1 5 5 6 15 17 15 20 15 9 12 8 11 14 19 20 35 19 20 5 1 0 277
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN (HENKEL KGAA) 0 0 0 0 0 0 0 0 0 7 1 3 2 4 10 8 10 6 11 11 10 11 9 7 5 18 12 18 8 10 14 8 10 8 12 11 10 11 8 273
XEROX CORPORATION 1 0 0 1 1 0 4 11 7 5 2 1 0 2 3 0 2 1 3 0 2 4 7 13 10 4 9 8 9 23 27 23 22 11 8 13 11 12 7 267
TEIJIN LIMITED 7 4 4 4 4 12 8 15 12 12 4 9 12 6 6 5 10 5 3 4 2 6 4 1 13 9 8 4 4 5 2 8 14 14 14 6 1 1 2 264
EXXONMOBIL CHEMICAL PATENTS 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 28 48 33 24 28 49 52 262
UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17 34 22 22 23 17 14 16 11 17 31 23 5 2 2 3 1 260
BAYER 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 13 39 30 49 24 36 25 20 19 2 0 1 0 258
TORAY INDUSTRIES INC. 0 1 4 19 10 5 5 14 4 8 6 3 11 3 7 11 10 6 5 5 5 5 6 7 5 9 5 7 11 9 9 11 3 7 4 3 3 6 5 257
STAUFFER CHEMICAL COMPANY 16 13 10 17 14 23 18 26 18 23 15 11 13 7 5 11 7 5 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 255
ASHLAND OIL INC. 18 6 10 12 12 9 5 3 2 6 3 3 6 6 10 5 11 16 38 31 18 7 1 5 1 4 5 0 0 0 0 0 0 0 0 0 0 0 0 253
DAINIPPON INK + CHEMICALS, INC. 0 1 1 2 2 4 3 2 2 6 4 3 6 4 5 4 4 6 12 6 6 14 10 5 9 10 5 5 8 8 11 12 6 8 14 13 12 8 11 252
NIPPON SHOKUBAI 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 3 6 15 10 10 12 15 25 27 34 21 24 15 14 19 252
MITSUBISHI PETROCHEMICAL CO., LTD. 2 3 4 7 3 7 7 3 2 8 3 3 5 12 8 7 7 9 9 14 12 10 18 18 28 20 18 0 1 0 0 0 0 0 0 0 0 0 0 248
UNITED STATES OF AMERICA, NAVY 5 7 5 14 5 6 7 7 5 4 8 6 6 8 10 4 1 5 0 4 2 5 12 10 15 16 4 12 4 8 10 3 4 2 4 6 5 4 3 246
FORD MOTOR COMPANY 0 1 4 13 15 12 12 24 8 7 10 12 14 8 22 19 27 18 3 1 2 0 2 1 3 4 0 1 1 0 0 1 0 0 0 0 0 0 0 245
BP CHEMICALS LIMITED 0 5 1 6 3 4 3 0 2 0 0 0 6 0 2 0 2 5 6 11 11 10 9 9 9 9 7 9 11 11 9 9 10 15 14 9 10 9 2 238
JAPAN SYNTHETIC RUBBER CO., LTD. 6 7 1 2 7 10 4 5 5 6 4 4 8 10 10 7 4 8 4 13 9 15 12 13 12 11 9 9 12 6 0 0 1 0 0 0 0 0 0 234
ATLANTIC RICHFIELD COMPANY 4 6 12 16 9 6 5 14 6 2 1 1 1 11 19 16 23 34 38 2 0 1 0 0 2 0 1 0 0 0 0 2 0 0 0 0 0 0 0 232
NALCO CHEMICAL COMPANY 6 0 6 7 6 6 6 10 11 7 8 9 6 3 7 2 7 3 11 14 9 7 8 9 8 6 12 4 4 2 6 7 5 6 0 0 0 0 0 228
ASAHI GLASS COMPANY, LTD. 0 0 1 2 1 5 2 1 1 4 6 1 6 8 5 3 3 3 5 6 4 10 7 11 4 7 2 10 3 3 5 7 12 5 20 21 7 20 5 226
UNIROYAL, INC. 17 21 11 24 15 21 21 17 15 11 6 8 3 6 7 12 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 223
IDEMITSU KOSAN COMPANY LIMITED 0 1 0 0 1 2 2 4 3 4 1 3 1 2 2 3 3 1 6 2 7 8 6 9 18 14 25 7 11 12 9 10 4 6 4 0 5 12 14 222
GAF CHEMICALS CORPORATION 16 11 5 22 13 12 12 5 4 12 8 6 12 6 4 6 11 3 6 5 7 14 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 221
BASF WYANDOTTE CORPORATION 11 5 9 12 17 3 9 14 10 17 14 14 16 21 15 20 12 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 220
NIPPON OIL COMPANY LTD. 2 1 0 0 6 2 7 8 10 11 15 10 10 11 15 4 9 3 6 10 3 14 7 9 7 8 8 2 7 5 1 2 0 0 0 0 0 0 0 213
UNITED STATES OF AMERICA, NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 2 9 5 6 5 3 1 1 0 2 5 0 3 0 8 9 17 8 8 2 6 7 6 13 12 11 9 6 6 4 6 7 7 5 2 3 6 2 1 213
CHISSO CORPORATION 0 2 0 3 1 1 2 3 1 2 0 1 5 5 6 5 9 8 4 9 9 12 14 15 5 5 8 2 2 6 7 7 20 15 10 3 1 1 3 212
KANEKA 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 4 8 15 31 31 30 29 13 31 20 212
HENKEL CORPORATION 0 0 0 0 0 0 0 0 0 1 3 3 6 3 4 8 7 3 5 2 1 3 2 5 3 6 4 12 8 16 13 12 16 6 3 11 18 12 13 209
ACUSHNET COMPANY 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2 2 7 9 8 16 19 14 26 23 48 32 208
DE SOTO, INC. 6 5 6 6 1 5 9 6 7 14 9 13 14 10 9 16 21 14 12 7 11 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 206
HITACHI CHEMICAL COMPANY, LTD. 4 1 1 1 1 0 0 3 3 11 3 11 11 10 5 6 7 6 3 1 4 8 6 10 6 6 7 7 9 8 5 3 10 4 2 8 6 3 5 205
HOOKER CHEMICALS & PLASTICS CORP. 17 27 7 20 14 12 16 14 27 14 8 14 9 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 205
PPG INDUSTRIES OHIO 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 21 27 36 26 21 22 12 25 14 204
FMC CORPORATION 29 36 16 21 6 4 10 5 3 2 1 3 5 5 1 4 6 1 2 1 0 0 1 0 3 0 0 5 1 7 5 7 5 2 1 3 2 0 0 203
DAICEL CHEMICAL INDUSTRIES LTD. 0 0 0 0 0 0 0 0 0 0 0 0 3 2 11 8 13 6 7 2 7 3 3 9 3 4 15 11 11 14 8 9 11 12 9 6 8 3 2 200
STANDARD OIL COMPANY 5 5 4 4 4 7 7 13 7 20 11 6 6 8 11 9 12