Top Patent Dropping Companies

Welcome to the "who's who" in the patent neglect world! Here are listings of the top companies that let their patents slide. Note that all the patents listed on this site are those that expire early due to failure to pay maintenance fees!

1. NEC Corporation [2484 expired patents]
2. International Business Machines Corporation [2408 expired patents]
3. Canon Kabushiki Kaisha [1954 expired patents]
4. Eastman Kodak Company [1821 expired patents]
5. Sony Corporation [1566 expired patents]
6. Hitachi, Ltd. [1387 expired patents]
7. Matsushita Electric Industrial Co., Ltd. [1155 expired patents]
8. Mitsubishi Denki Kabushiki Kaisha [1034 expired patents]
9. U.S. Philips Corporation [980 expired patents]
10. General Electric Company [977 expired patents]
11. Xerox Corporation [779 expired patents]
12. Motorola, Inc. [774 expired patents]
13. BASF Aktiengesellschaft [735 expired patents]
14. Kabushiki Kaisha Toshiba [709 expired patents]
15. Robert Bosch GmbH [643 expired patents]
16. Bayer Aktiengesellschaft [627 expired patents]
17. Fujitsu Limited [581 expired patents]
18. The United States of America as represented by the Secretary of the Navy [540 expired patents]
19. Siemens Aktiengesellschaft [527 expired patents]
20. General Motors Corporation [516 expired patents]
21. Advanced Micro Devices, Inc. [465 expired patents]
22. Ford Motor Company [450 expired patents]
23. Nikon Corporation [419 expired patents]
24. The Procter & Gamble Company [402 expired patents]
25. Eli Lilly and Company [399 expired patents]
26. Merck & Co., Inc. [369 expired patents]
27. Honda Giken Kogyo Kabushiki Kaisha [343 expired patents]
28. United Microelectronics Corp. [328 expired patents]
29. Minnesota Mining and Manufacturing Company [321 expired patents]
30. Hon Hai Precision Ind. Co., Ltd. [293 expired patents]
31. The Dow Chemical Company [285 expired patents]
32. Ford Global Technologies, Inc. [281 expired patents]
33. The United States of America as represented by the Secretary of the Army [280 expired patents]
34. Fuji Photo Film Co., Ltd. [277 expired patents]
35. Hoechst Aktiengesellschaft [274 expired patents]
36. Yazaki Corporation [262 expired patents]
37. Sharp Kabushiki Kaisha [257 expired patents]
38. Asahi Kogaku Kogyo Kabushiki Kaisha [256 expired patents]
39. Applied Materials, Inc. [252 expired patents]
40. Abbott Laboratories [239 expired patents]
41. VLSI Technology, Inc. [232 expired patents]
42. Sanyo Electric Co., Ltd. [231 expired patents]
43. Shell Oil Company [230 expired patents]
44. L'Oreal [230 expired patents]
45. Toyota Jidosha Kabushiki Kaisha [211 expired patents]
46. DaimlerChrysler AG [209 expired patents]
47. Phillips Petroleum Company [208 expired patents]
48. Delphi Technologies, Inc. [208 expired patents]
49. Kabushiki Kaisha Toyoda Jidoshokki Seisakusho [201 expired patents]
50. Sumitomo Electric Industries, Ltd. [189 expired patents]
51. Lucent Technologies Inc. [189 expired patents]
52. Corning Incorporated [187 expired patents]
53. Hughes Aircraft Company [186 expired patents]
54. The Whitaker Corporation [185 expired patents]
55. Ciba-Geigy Corporation [183 expired patents]
56. Seagate Technology, Inc. [178 expired patents]
57. Seagate Technology LLC [175 expired patents]
58. Hewlett-Packard Company [171 expired patents]
59. E. I. Du Pont de Nemours and Company [170 expired patents]
60. Pfizer Inc. [156 expired patents]
61. Alcatel [156 expired patents]
62. Massachusetts Institute of Technology [152 expired patents]
63. Caterpillar Inc. [152 expired patents]
64. Institut Francais du Petrole [151 expired patents]
65. Ricoh Company, Ltd. [148 expired patents]
66. Dow Corning Corporation [148 expired patents]
67. The Regents of the University of California [147 expired patents]
68. Sumitomo Wiring Systems, Ltd. [146 expired patents]
69. The United States of America as represented by the United States [144 expired patents]
70. Shin-Etsu Chemical Co., Ltd. [140 expired patents]
71. Koninklijke Philips Electronics N.V. [140 expired patents]
72. Konica Corporation [140 expired patents]
73. Visteon Global Technologies, Inc. [139 expired patents]
74. Nippondenso Co., Ltd. [138 expired patents]
75. NGK Insulators, Ltd. [137 expired patents]
76. Mobil Oil Corporation [136 expired patents]
77. Eaton Corporation [136 expired patents]
78. Sumitomo Chemical Company, Limited [133 expired patents]
79. Rohm and Haas Company [130 expired patents]
80. Olympus Optical Co., Ltd. [130 expired patents]
81. Samsung Electronics Co., Ltd. [126 expired patents]
82. Takeda Chemical Industries, Ltd. [124 expired patents]
83. The United States of America as represented by the Administrator of the [122 expired patents]
84. Mercedes-Benz AG [120 expired patents]
85. Molex Incorporated [119 expired patents]
86. The United States of America as represented by the Secretary of the Air [117 expired patents]
87. Warner-Lambert Company [115 expired patents]
88. Novo Nordisk A/S [114 expired patents]
89. Texaco Inc. [113 expired patents]
90. TRW Inc. [112 expired patents]
91. Northern Telecom Limited [112 expired patents]
92. Nissan Motor Co., Ltd. [112 expired patents]
93. UOP [111 expired patents]
94. United Microelectronics Corporation [110 expired patents]
95. Alcatel N.V. [110 expired patents]
96. Henkel Kommanditgesellschaft auf Aktien [108 expired patents]
97. Union Carbide Chemicals & Plastics Technology Corporation [107 expired patents]
98. Southpac Trust International, Inc. [106 expired patents]
99. Philips Electronics North America Corporation [106 expired patents]
100. International Business Machines Corp. [104 expired patents]