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

Patenting By Geographic Region (State and Country),
Breakout By Technology Class

Count of 1963 - 2006 Utility Patent Grants,
By Calendar Year of Grant

- Explanation of Data -

Rank Ordered Listing of Technology Classes Receiving 1 or More Utility Patents During the Period
Originating From

DELAWARE

( patent origin is determined by the residence of the first-named inventor )
( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )

The following table displays technology classes and counts of associated patents, as distributed by the year of patent grant.
Class Class Title 1963 1964 1965 1966 1967 1968 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 Total
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 56 61 97 140 170 115 118 99 60 136 98 86 97 78 74 68 36 48 69 51 60 43 59 44 66 47 57 55 78 87 80 88 75 68 70 58 69 77 73 55 51 45 40 40 3242
532 Organic Compounds (includes Classes 532-570) 81 107 110 138 113 103 91 101 93 160 115 107 119 94 63 62 41 45 52 37 34 33 30 35 32 40 56 44 58 70 86 69 64 70 42 47 59 51 54 46 41 42 35 44 3014
428 Stock Material or Miscellaneous Articles 19 12 16 25 30 27 38 28 25 26 20 23 21 12 17 21 17 11 9 15 13 16 23 13 15 26 21 24 24 52 26 33 37 29 24 26 33 18 23 14 11 17 22 15 967
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 7 2 8 9 12 8 9 8 16 21 11 8 8 14 24 16 14 15 25 20 16 22 16 21 21 17 20 28 30 34 33 24 22 40 33 27 27 34 28 33 40 38 37 37 933
504 Plant Protecting and Regulating Compositions 4 8 7 13 15 14 2 5 3 7 6 4 15 6 15 16 5 15 3 11 15 18 26 35 54 51 37 22 9 6 2 2 9 8 10 5 7 2 4 1 4 5 1 3 510
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 20 14 11 24 11 18 11 16 14 13 8 7 11 8 14 5 4 6 6 1 4 7 2 4 4 11 20 11 23 18 16 8 14 9 7 14 9 7 6 6 4 5 2 4 437
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 1 0 1 3 4 7 4 1 12 17 5 8 11 1 9 4 9 10 17 11 14 9 9 7 14 14 15 21 22 10 17 6 5 7 3 8 7 6 9 4 7 7 10 5 371
252 Compositions 1 2 6 9 6 14 4 8 13 14 13 10 16 15 5 7 3 3 5 4 2 3 5 5 2 3 7 7 28 13 16 7 11 14 14 16 5 5 1 3 2 7 6 7 347
423 Chemistry of Inorganic Compounds 16 4 16 11 16 21 19 12 10 22 10 11 17 12 9 8 6 4 4 2 1 2 2 4 5 1 4 5 8 6 6 6 5 7 2 4 5 3 4 2 3 1 2 2 320
435 Chemistry: Molecular Biology and Microbiology 0 0 1 0 1 1 1 0 1 2 0 1 0 2 1 0 3 2 3 1 1 6 1 2 3 2 10 6 6 9 10 10 9 12 11 12 13 19 28 19 22 15 9 27 282
106 Compositions: Coating or Plastic 4 4 4 5 3 5 15 10 11 11 25 19 3 5 6 6 3 5 2 2 3 8 1 2 2 5 5 2 5 6 4 6 7 6 6 15 8 12 5 4 1 3 3 7 274
427 Coating Processes 6 7 6 7 5 6 11 10 4 14 7 6 7 3 3 4 1 2 6 2 3 5 4 6 10 5 3 4 3 9 13 8 10 10 5 6 7 6 4 2 4 3 5 0 252
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 1 1 4 9 6 16 9 8 10 12 11 9 7 7 1 7 0 4 2 0 1 2 6 0 6 9 7 7 3 10 6 5 6 7 11 4 6 4 3 3 3 1 4 3 241
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 2 1 11 4 2 2 3 6 10 11 4 6 3 7 6 10 3 9 9 3 3 5 2 5 2 3 2 7 5 1 1 1 4 5 1 3 6 11 9 4 4 4 4 4 208
210 Liquid Purification or Separation 1 1 2 3 0 3 4 10 11 9 4 10 4 5 3 6 1 7 8 1 2 5 4 3 7 2 5 8 8 9 4 9 7 5 1 2 4 0 6 3 7 5 2 4 205
501 Compositions: Ceramic 2 1 0 4 2 1 3 2 4 9 5 5 0 0 0 1 0 0 0 0 0 0 0 1 2 1 19 11 25 28 18 16 9 3 3 2 0 1 0 0 0 0 2 3 183
585 Chemistry of Hydrocarbon Compounds 5 7 7 5 6 5 8 10 4 20 7 10 8 1 2 0 1 0 0 0 0 2 0 2 0 4 1 5 8 3 3 2 3 3 1 0 3 4 3 2 2 1 0 1 159
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 4 4 0 4 7 8 6 2 10 5 3 2 0 1 0 1 2 3 2 4 2 4 2 3 6 3 8 7 2 4 8 6 5 6 4 3 4 3 2 1 1 1 1 1 155
426 Food or Edible Material: Processes, Compositions, and Products 0 2 4 3 2 5 5 3 4 4 5 9 3 4 1 2 1 4 7 8 5 4 3 2 2 1 1 7 7 6 2 2 5 4 6 2 4 3 1 2 1 0 1 1 148
028 Textiles: Manufacturing 7 6 6 12 11 5 11 7 5 6 2 8 3 6 6 8 1 2 3 1 0 0 2 0 1 0 4 4 2 2 3 1 0 2 2 0 2 2 0 0 0 0 1 1 145
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 6 6 9 8 4 5 5 7 10 10 5 3 6 14 11 1 2 0 0 3 1 0 0 1 1 1 1 3 1 2 3 4 0 1 1 0 2 1 0 0 2 0 1 1 142
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 0 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 0 0 2 4 3 3 5 1 7 10 22 17 27 23 127
073 Measuring and Testing 2 2 2 5 5 2 5 7 2 2 1 4 3 1 3 5 4 2 3 4 3 2 3 2 1 2 2 5 2 3 3 3 1 3 4 3 3 0 1 4 6 1 2 2 125
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 0 1 5 0 2 4 5 2 2 7 7 7 3 1 4 3 2 4 1 3 1 7 4 1 4 3 0 1 2 4 6 2 2 3 1 2 4 4 1 1 0 1 0 0 117
204 Chemistry: Electrical and Wave Energy 3 0 1 4 3 6 3 1 0 0 0 3 3 1 2 3 0 0 2 1 2 2 2 2 4 2 0 2 4 4 4 6 5 4 1 2 11 2 3 3 1 0 2 2 106
162 Paper Making and Fiber Liberation 5 3 4 6 1 2 6 2 3 0 4 1 1 1 1 0 4 0 3 0 0 1 3 1 0 0 4 4 3 2 1 4 3 2 5 3 2 3 6 3 4 4 0 0 105
451 Abrading 0 0 0 0 1 0 1 1 2 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 1 2 1 2 2 1 1 3 2 1 1 2 7 9 18 12 10 12 10 105
057 Textiles: Spinning, Twisting, and Twining 5 2 2 3 4 8 6 1 2 3 5 2 7 5 3 3 2 1 4 3 1 0 1 0 1 4 3 1 3 0 0 1 1 1 1 1 0 0 0 0 0 0 2 1 93
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 2 4 4 3 5 3 7 2 4 8 3 6 2 3 2 1 1 0 3 0 2 1 3 1 0 0 0 0 0 1 6 1 2 1 1 1 0 0 0 0 0 2 0 0 85
095 Gas Separation: Processes 0 2 2 0 7 1 1 4 0 1 1 3 1 0 1 1 0 0 0 0 1 0 0 0 1 2 3 1 8 3 6 4 3 0 1 0 3 4 5 4 1 2 3 3 83
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 0 0 0 2 1 5 3 0 3 2 1 0 3 3 2 2 1 0 1 0 0 0 0 1 1 2 9 1 9 4 5 1 0 2 2 3 1 4 2 0 2 1 1 2 82
250 Radiant Energy 0 1 2 1 3 0 2 4 4 0 5 2 3 6 2 1 0 1 3 1 1 0 0 0 0 1 2 5 4 2 1 1 3 1 1 1 1 1 2 2 1 4 3 2 80
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 1 1 2 3 1 2 4 1 2 0 2 2 2 3 1 1 0 1 3 0 0 0 1 0 1 2 4 0 3 2 2 1 4 2 3 3 2 1 1 1 0 2 2 3 72
604 Surgery (Medicators and Receptors) 0 0 1 0 1 0 1 2 1 1 1 2 0 0 2 0 1 0 0 0 3 2 2 3 0 1 1 2 1 2 2 5 4 5 3 2 4 5 2 1 2 5 0 1 71
044 Fuel and Related Compositions 4 1 4 6 5 5 1 2 0 1 5 8 7 1 5 1 4 3 0 0 0 0 0 0 0 0 1 2 2 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 70
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 4 6 2 1 2 7 4 6 3 5 3 3 0 3 1 0 0 1 2 0 0 0 0 1 1 0 2 4 0 0 2 1 2 3 1 0 0 0 0 0 0 0 0 0 70
083 Cutting 2 3 0 3 2 0 3 0 2 0 5 1 0 1 4 2 1 3 2 1 1 1 0 2 1 0 1 1 2 1 1 1 1 1 0 4 1 2 3 2 4 3 1 0 69
206 Special Receptacle or Package 0 0 3 2 4 3 5 3 3 6 2 3 3 1 3 4 1 0 0 1 2 0 2 2 2 0 3 0 0 2 0 1 1 1 1 0 1 2 0 1 0 0 0 0 68
164 Metal Founding 0 0 2 0 0 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 0 1 0 0 0 0 2 0 14 4 9 9 2 11 0 0 2 0 2 0 1 1 0 2 67
436 Chemistry: Analytical and Immunological Testing 0 0 0 1 2 0 1 1 1 0 2 2 0 3 1 0 0 1 2 1 2 4 3 2 2 1 0 1 2 2 0 3 3 3 0 7 2 4 1 1 1 1 2 2 67
242 Winding, Tensioning, or Guiding 7 5 1 5 9 5 3 1 2 2 4 2 2 0 1 0 1 4 0 0 1 2 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 3 0 2 0 0 0 0 64
149 Explosive and Thermic Compositions or Charges 3 2 7 3 6 6 3 1 1 1 5 1 3 0 2 1 0 0 1 0 0 0 0 0 0 0 1 1 3 1 2 2 0 1 1 2 0 0 0 0 0 0 0 0 60
356 Optics: Measuring and Testing 0 0 0 1 3 0 0 4 4 2 3 0 2 1 0 3 1 2 0 2 1 0 3 1 3 2 3 2 1 1 0 0 1 0 0 2 0 2 0 0 3 3 1 2 59
366 Agitating (e.g., of articles and materials) 1 0 3 2 3 1 1 1 6 0 0 0 3 1 1 6 3 0 2 0 2 3 1 0 1 1 2 1 2 1 0 0 1 1 0 2 1 1 1 2 0 1 1 0 59
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 2 3 0 2 4 3 3 3 3 4 2 6 2 4 1 0 0 0 0 1 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 1 3 4 3 1 0 58
137 Fluid Handling 3 0 4 4 1 1 3 3 2 1 2 1 2 1 1 1 0 0 1 0 0 4 1 0 1 1 1 2 1 2 1 1 0 3 0 1 2 2 0 0 0 1 0 1 56
208 Mineral Oils: Processes and Products 2 2 3 4 1 3 3 6 2 2 1 0 3 0 0 3 0 1 2 0 1 1 1 1 1 0 1 1 0 0 1 1 0 3 1 0 0 1 0 0 2 1 0 0 55
219 Electric Heating 0 0 0 4 0 3 2 0 1 0 6 2 0 0 0 0 0 0 0 0 0 2 5 1 1 1 4 1 2 3 2 0 1 1 0 0 2 4 1 1 0 0 4 1 55
229 Envelopes, Wrappers, and Paperboard Boxes 1 1 1 1 0 2 0 0 1 3 6 1 0 3 1 3 0 1 1 4 0 1 3 1 2 2 0 3 1 0 3 3 2 1 0 0 1 2 0 0 0 0 0 0 55
359 Optics: Systems and Elements 0 0 0 0 0 0 1 0 3 8 0 5 0 2 1 0 1 1 1 0 0 0 0 1 1 2 2 4 3 2 1 1 0 1 1 1 4 2 0 1 1 0 1 0 52
203 Distillation: Processes, Separatory 2 2 1 1 4 4 3 1 5 3 2 0 1 0 0 0 1 0 0 1 2 1 1 0 0 0 0 2 1 2 2 0 0 0 0 1 2 1 0 1 1 0 1 0 49
361 Electricity: Electrical Systems and Devices 4 0 2 1 4 2 7 2 4 3 2 3 0 0 1 3 0 1 1 0 0 1 1 0 0 0 0 2 0 1 0 1 0 0 0 1 1 0 0 1 0 0 0 0 49
174 Electricity: Conductors and Insulators 2 2 3 3 0 0 1 1 2 2 2 0 1 0 0 0 0 1 0 0 2 0 0 1 0 2 0 1 1 2 3 2 2 2 1 4 0 0 2 0 0 0 2 1 48
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 2 2 1 2 3 0 2 5 1 3 3 3 2 0 0 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 1 0 3 1 3 48
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 1 2 1 0 0 2 3 0 3 8 3 3 3 3 0 1 0 0 0 3 0 1 1 5 0 0 1 2 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 48
128 Surgery (includes Class 600) 2 1 1 1 3 0 1 1 2 2 0 1 0 0 0 2 1 1 0 1 1 0 0 1 0 0 0 2 1 5 2 1 0 1 1 2 1 0 1 0 0 1 2 2 44
222 Dispensing (apparatus and process) 1 0 3 1 3 2 1 2 1 1 1 3 1 1 1 0 1 0 1 1 0 1 0 1 2 2 0 2 0 1 2 0 2 1 0 0 0 0 0 1 2 1 0 0 43
244 Aeronautics and Astronautics 1 4 3 1 0 2 3 2 3 0 3 5 0 2 2 2 1 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 1 0 1 1 0 0 0 0 0 42
385 Optical Waveguides 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 4 1 2 0 2 2 0 0 1 2 1 5 3 3 2 2 0 0 2 2 2 0 1 0 1 1 1 42
062 Refrigeration 1 1 0 1 0 1 3 1 5 0 2 1 1 3 2 0 0 0 0 0 0 0 1 0 0 0 0 0 2 2 0 2 1 1 1 3 0 0 1 0 1 2 0 2 41
505 Superconductor Technology: Apparatus, Material, Process 0 0 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 8 2 4 6 2 3 0 3 1 1 0 1 0 1 3 0 40
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 0 0 2 1 0 0 1 0 2 1 0 2 1 0 0 0 0 0 1 1 0 2 1 0 5 0 1 1 0 0 3 0 1 1 3 2 1 0 1 0 2 3 0 1 40
002 Apparel 0 1 1 1 0 2 1 1 5 3 3 0 0 0 0 0 0 2 0 0 0 0 0 1 0 0 1 0 1 1 0 1 1 3 2 2 1 2 1 0 0 1 0 1 39
034 Drying and Gas or Vapor Contact with Solids 2 2 0 1 3 4 0 0 2 1 1 1 0 5 1 5 0 0 0 1 0 1 0 0 2 0 0 0 0 0 1 0 0 2 0 0 2 0 0 0 0 1 1 0 39
148 Metal Treatment 1 2 4 4 1 5 2 1 1 2 1 2 1 1 1 0 1 2 0 0 0 0 0 0 0 0 0 2 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 38
060 Power Plants 0 0 0 1 3 0 1 0 3 2 2 3 3 2 1 3 1 1 0 1 1 1 0 0 0 0 1 0 1 0 1 2 0 0 0 0 0 1 2 0 0 0 0 0 37
165 Heat Exchange 0 1 1 4 3 4 3 4 0 1 1 4 2 0 0 0 0 0 1 0 0 1 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 0 1 37
102 Ammunition and Explosives 2 0 2 0 0 1 4 1 5 8 2 2 1 2 0 0 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 36
340 Communications: Electrical 0 1 0 1 2 1 3 1 3 1 1 2 0 0 2 0 0 0 0 2 0 0 2 0 1 0 2 0 0 1 0 0 1 1 1 2 1 0 1 1 0 0 0 2 36
053 Package Making 0 1 1 3 1 1 1 3 1 1 2 2 3 0 1 1 0 0 0 1 1 1 1 2 2 0 0 1 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 35
433 Dentistry 0 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 1 0 0 1 1 0 2 0 1 1 8 5 1 1 1 1 0 2 1 0 0 0 1 1 2 1 0 0 35
019 Textiles: Fiber Preparation 1 2 1 0 4 2 4 2 0 0 2 1 3 2 2 1 1 0 1 0 0 0 1 0 0 0 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 34
324 Electricity: Measuring and Testing 0 0 1 2 0 1 0 0 1 0 0 1 0 1 1 2 0 0 1 1 0 0 0 0 0 2 1 1 0 3 2 2 0 0 0 0 0 0 0 2 1 1 1 6 34
029 Metal Working 1 0 1 0 1 0 2 2 1 1 2 1 1 0 1 0 0 1 2 0 0 1 0 1 1 1 1 0 0 1 3 0 1 0 1 0 1 1 1 1 0 0 1 0 33
136 Batteries: Thermoelectric and Photoelectric 0 0 0 0 2 1 1 0 1 0 0 0 0 0 0 0 0 2 5 3 3 1 1 2 1 1 1 0 1 0 0 1 0 1 0 0 0 2 2 1 0 0 0 0 33
438 Semiconductor Device Manufacturing: Process 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 1 0 2 3 0 0 0 0 0 0 0 0 0 1 1 2 2 2 4 4 3 5 33
052 Static Structures (e.g., Buildings) 0 0 0 0 2 0 2 0 2 0 1 1 0 2 0 1 1 0 1 0 0 1 0 0 2 0 0 1 0 1 1 0 0 1 1 0 2 0 1 1 3 1 2 1 32
096 Gas Separation: Apparatus 0 0 0 1 0 0 0 1 0 0 1 2 1 1 1 0 0 0 0 0 0 0