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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 2004 - 2008 Utility Patent Grants
As Distributed 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

MARYLAND

( patent origin is determined by the residence of the first-named inventor )
( technology class is determined by the primary classification assigned to a patent- see 'Explanation of Data' )
( some classes have been combined together under a single class identifier )

The following table displays technology classes and counts of utility patents classified in them; patents are distributed either by year of patent grant or by year of patent application.
Class Class Title 2004 2005 2006 2007 2008 Total
435 Chemistry: Molecular Biology and Microbiology 160 141 140 101 95 637
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 134 108 143 132 105 622
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 22 30 48 63 64 227
370 Multiplex Communications 29 35 35 31 38 168
455 Telecommunications 23 23 37 29 39 151
532 Organic Compounds (includes Classes 532-570) 40 19 28 25 36 148
340 Communications: Electrical 17 17 35 32 41 142
128 Surgery (includes Class 600) 22 29 18 27 16 112
250 Radiant Energy 26 21 25 17 23 112
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 10 12 34 21 30 107
382 Image Analysis 17 7 20 17 37 98
375 Pulse or Digital Communications 19 18 17 22 21 97
385 Optical Waveguides 23 20 23 14 15 95
398 Optical Communications 7 17 25 18 21 88
073 Measuring and Testing 21 10 19 13 15 78
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 10 7 22 18 20 77
356 Optics: Measuring and Testing 11 13 7 20 18 69
379 Telephonic Communications 13 18 20 8 9 68
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 21 11 9 11 12 64
359 Optical: Systems and Elements 11 16 14 11 10 62
702 DP: Measuring, Calibrating, or Testing (Data Processing) 12 12 14 9 15 62
707 DP: Database and File Management or Data Structures (Data Processing) 15 10 13 11 11 60
713 Support (Electrical Computers and Digital Processing Systems) 6 10 17 9 16 58
436 Chemistry: Analytical and Immunological Testing 15 9 12 6 12 54
324 Electricity: Measuring and Testing 14 9 16 8 5 52
714 Error Detection/Correction and Fault Detection/Recovery 5 11 8 11 16 51
310 Electrical Generator or Motor Structure 11 12 13 7 1 44
343 Communications: Radio Wave Antennas 9 18 9 5 3 44
428 Stock Material or Miscellaneous Articles 11 12 12 2 7 44
438 Semiconductor Device Manufacturing: Process 10 9 5 11 9 44
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 16 4 9 7 6 42
252 Compositions 2 6 7 12 12 39
333 Wave Transmission Lines and Networks 13 5 9 6 4 37
380 Cryptography 5 8 13 6 4 36
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 8 5 7 8 8 36
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 2 7 9 8 10 36
029 Metal Working 8 6 13 5 3 35
604 Surgery (Medicators and Receptors) 13 9 3 6 4 35
607 Surgery: Light, Thermal, and Electrical Application 2 7 5 12 9 35
210 Liquid Purification or Separation 8 9 6 8 3 34
345 Computer Graphics Processing and Selective Visual Display Systems 4 9 6 9 6 34
083 Cutting 11 5 7 6 4 33
434 Education and Demonstration 14 5 4 3 7 33
002 Apparel 3 5 9 5 10 32
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 10 5 3 4 10 32
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 5 4 8 10 4 31
244 Aeronautics and Astronautics 5 6 6 11 3 31
473 Games Using Tangible Projectile 1 13 6 4 6 30
700 DP: Generic Control Systems or Specific Applications (Data Processing) 6 7 6 3 8 30
606 Surgery (instruments) 6 10 5 3 5 29
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 10 5 3 7 3 28
361 Electricity: Electrical Systems and Devices 13 5 1 3 5 27
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 8 2 7 4 6 27
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 4 7 5 7 4 27
726 Information Security 2 2 5 8 10 27
102 Ammunition and Explosives 5 5 5 3 8 26
033 Geometrical Instruments 5 4 4 8 4 25
114 Ships 4 3 10 5 3 25
119 Animal Husbandry 4 8 6 3 4 25
239 Fluid Sprinkling, Spraying, and Diffusing 7 5 5 5 3 25
005 Beds 4 6 5 7 2 24
081 Tools 3 2 8 6 3 22
362 Illumination 4 4 4 5 5 22
030 Cutlery 7 2 7 3 2 21
206 Special Receptacle or Package 5 5 2 3 6 21
451 Abrading 2 3 4 9 3 21
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 3 9 3 3 3 21
060 Power Plants 6 6 2 4 2 20
089 Ordnance 3 0 3 2 12 20
297 Chairs and Seats 3 4 4 4 5 20
378 X-Ray or Gamma Ray Systems or Devices 2 2 4 5 7 20
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 3 5 4 4 4 20
165 Heat Exchange 3 6 4 5 1 19
173 Tool Driving or Impacting 5 1 6 2 5 19
222 Dispensing (apparatus and process) 4 6 2 6 1 19
227 Elongated-Member-Driving Apparatus 3 4 2 6 4 19
241 Solid Material Comminution or Disintegration 3 1 3 7 5 19
381 Electrical Audio Signal Processing Systems and Devices 5 2 5 5 2 19
711 Memory (Electrical Computers and Digital Processing Systems) 4 2 6 6 1 19
725 Interactive Video Distribution Systems 2 2 5 5 5 19
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 5 2 4 3 4 18
280 Land Vehicles 1 2 8 4 3 18
427 Coating Processes 8 2 3 0 5 18
439 Electrical Connectors 4 4 5 3 2 18
482 Exercise Devices 3 0 5 6 4 18
706 DP: Artificial Intelligence (Data Processing) 4 1 4 4 5 18
015 Brushing, Scrubbing, and General Cleaning 3 4 5 4 1 17
320 Electricity: Battery or Capacitor Charging or Discharging 3 4 3 1 6 17
367 Communications, Electrical: Acoustic Wave Systems and Devices 4 1 6 4 2 17
423 Chemistry of Inorganic Compounds 2 3 5 6 1 17
052 Static Structures (e.g., Buildings) 5 5 3 3 0 16
062 Refrigeration 5 2 4 1 4 16
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 2 2 8 3 1 16
341 Coded Data Generation or Conversion 2 3 5 2 4 16
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 3 2 4 3 4 16
056 Harvesters 2 5 1 2 5 15
084 Music 5 3 0 3 4 15
248 Supports (e.g., for holding articles, etc.) 1 5 2 2 5 15
405 Hydraulic and Earth Engineering 2 6 3 3 1 15
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 2 3 2 3 5 15
717 DP: Software Development, Installation, and Management (Data Processing) 1 3 5 0 6 15
204 Chemistry: Electrical and Wave Energy 2 6 4 2 0 14
372 Coherent Light Generators 5 5 2 1 1 14
004 Baths, Closets, Sinks, and Spittoons 0 3 6 3 1 13
106 Compositions: Coating or Plastic 4 1 3 5 0 13
198 Conveyors: Power-Driven 3 2 1 4 3 13
208 Mineral Oils: Processes and Products 0 4 5 3 1 13
220 Receptacles 2 4 3 3 1 13
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 3 2 1 5 2 13
351 Optics: Eye Examining, Vision Testing and Correcting 4 0 5 2 2 13
601 Surgery: Kinesitherapy 4 4 4 0 1 13
040 Card, Picture, or Sign Exhibiting 2 2 2 4 2 12
118 Coating Apparatus 4 0 3 3 2 12
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 3 2 1 4 2 12
209 Classifying, Separating, and Assorting Solids 2 2 1 5 2 12
273 Amusement Devices: Games 3 2 2 4 1 12
296 Land Vehicles: Bodies and Tops 4 1 2 4 1 12
408 Cutting by Use of Rotating Axially Moving Tool 1 2 5 2 2 12
053 Package Making 2 0 1 2 6 11
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 3 3 1 1 3 11
123 Internal-Combustion Engines 2 2 4 1 2 11
134 Cleaning and Liquid Contact with Solids 6 1 1 2 1 11
219 Electric Heating 6 2 0 3 0 11
348 Television 2 3 1 2 3 11
358 Facsimile and Static Presentation Processing 1 2 2 5 1 11
365 Static Information Storage and Retrieval 3 3 3 1 1 11
510 Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions 3 3 2 1 2 11
043 Fishing, Trapping, and Vermin Destroying 2 3 1 2 2 10
135 Tent, Canopy, Umbrella, or Cane 4 2 0 3 1 10
137 Fluid Handling 2 0 5 2 1 10
174 Electricity: Conductors and Insulators 1 2 4 2 1 10
315 Electric Lamp and Discharge Devices: Systems 4 3 2 1 0 10
475 Planetary Gear Transmission Systems or Components 1 1 2 3 3 10
074 Machine Element or Mechanism 0 2 4 3 0 9
330 Amplifiers 3 1 0 2 3 9
708 Arithmetic Processing and Calculating (Electrical Computers) 2 2 2 2 1 9
716 DP: Design and Analysis of Circuit or Semiconductor Mask (Data Processing) 0 2 6 0 1 9
072 Metal Deforming 2 4 0 2 0 8
096 Gas Separation: Apparatus 0 2 0 5 1 8
307 Electrical Transmission or Interconnection Systems 1 1 2 2 2 8
326 Electronic Digital Logic Circuitry 3 2 0 1 2 8
368 Horology: Time Measuring Systems or Devices 2 2 0 3 1 8
404 Road Structure, Process, or Apparatus 0 1 1 5 1 8
411 Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener 1 1 6 0 0 8
417 Pumps 0 2 4 1 1 8
440 Marine Propulsion 2 2 2 1 1 8
446 Amusement Devices: Toys 4 2 0 1 1 8
602 Surgery: Splint, Brace, or Bandage 1 4 2 1 0 8
149 Explosive and Thermic Compositions or Charges 2 3 1 1 0 7
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 1 2 3 1 0 7
279 Chucks or Sockets 0 2 0 3 2 7
318 Electricity: Motive Power Systems 1 1 4 0 1 7
331 Oscillators 0 2 3 1 1 7
401 Coating Implements with Material Supply 4 2 1 0 0 7
034 Drying and Gas or Vapor Contact with Solids 2 2 2 0 0 6
180 Motor Vehicles 1 1 0 1 3 6
182 Fire Escape, Ladder, or Scaffold 2 3 1 0 0 6
211 Supports: Racks 0 3 1 1 1 6
463 Amusement Devices: Games 1 0 3 0 2 6
036 Boots, Shoes, and Leggings 1 0 1 2 1 5
051 Abrasive Tool Making Process, Material, or Composition 0 3 2 0 0 5
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 3 2 0 0 0 5
108 Horizontally Supported Planar Surfaces 3 0 1 1 0 5
139 Textiles: Weaving 0 0 3 2 0 5
144 Woodworking 2 0 2 0 1 5
181 Acoustics 1 0 0 1 3 5
188 Brakes 0 2 3 0 0 5
224 Package and Article Carriers 3 0 0 1 1 5
251 Valves and Valve Actuation 0 2 2 1 0 5
269 Work Holders 0 2 1 1 1 5
290 Prime-Mover Dynamo Plants 0 1 0 2 2 5
292 Closure Fasteners 0 1 0 2 2 5
294 Handling: Hand and Hoist-Line Implements 2 1 0 2 0 5
312 Supports: Cabinet Structure 3 2 0 0 0 5
366 Agitating (e.g., of articles and materials) 2 0 0 2 1 5
410 Freight Accommodation On Freight Carrier 1 1 1 2 0 5
414 Material or Article Handling 1 4 0 0 0 5
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 1 0 2 1 1 5
433 Dentistry 1 1 2 0 1 5
441 Buoys, Rafts, and Aquatic Devices 2 2 1 0 0 5
501 Compositions: Ceramic 2 1 0 1 1 5
588 Hazardous or Toxic Waste Destruction or Containment 2 2 0 1 0 5
042 Firearms 0 0 1 2 1 4
047 Plant Husbandry 0 1 2 0 1 4
048 Gas: Heating and Illuminating 2 0 0 1 1 4
095 Gas Separation: Processes 0 0 4 0 0 4
125 Stone Working 0 1 1 1 1 4
132 Toilet 2 0 2 0 0 4
160 Flexible or Portable Closure, Partition, or Panel 1 2 1 0 0 4
200 Electricity: Circuit Makers and Breakers 1 2 1 0 0 4
229 Envelopes, Wrappers, and Paperboard Boxes 1 0 0 2 1 4
242 Winding, Tensioning, or Guiding 1 0 1 1 1 4
254 Implements or Apparatus for Applying Pushing or Pulling Force 1 1 0 1 1 4
271 Sheet Feeding or Delivering 1 1 1 0 1 4
277 Seal for a Joint or Juncture 1 0 3 0 0 4
313 Electric Lamp and Discharge Devices 0 0 1 3 0 4
336 Inductor Devices 0 0 1 1 2 4
386 Television Signal Processing for Dynamic Recording or Reproducing 0 0 1 2 1 4
415 Rotary Kinetic Fluid Motors or Pumps 0 2 2 0 0 4
426 Food or Edible Material: Processes, Compositions, and Products 3 0 0 0 1 4
431 Combustion 1 2 0 0 1 4
450 Foundation Garments 0 1 1 2 0 4
452 Butchering 0 1 0 0 3 4
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 2 0 0 0 2 4
585 Chemistry of Hydrocarbon Compounds 1 0 1 1 1 4
014 Bridges 2 1 0 0 0 3
049 Movable or Removable Closures 1 0 1 1 0 3
070 Locks 0 2 1 0 0 3
101 Printing 1 0 2 0 0 3
110 Furnaces 1 0 1 1 0 3
126 Stoves and Furnaces 1 1 0 0 1 3
177 Weighing Scales 2 0 0 1 0 3
215 Bottles and Jars 0 1 1 0 1 3
221 Article Dispensing 1 0 1 1 0 3
223 Apparel Apparatus 1 0 1 0 1 3
228 Metal Fusion Bonding 0 0 0 2 1 3
232 Deposit and Collection Receptacles 1 1 1 0 0 3
256 Fences 1 0 1 0 1 3
261 Gas and Liquid Contact Apparatus 1 0 0 2 0 3
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 0 2 1 0 0 3
337 Electricity: Electrothermally or Thermally Actuated Switches 1 0 0 0 2 3
355 Photocopying 0 2 1 0 0 3
369 Dynamic Information Storage or Retrieval 1 1 0 0 1 3
374 Thermal Measuring and Testing 1 0 0 0 2 3
392 Electric Resistance Heating Devices 0 1 1 1 0 3
403 Joints and Connections 0 2 0 0 1 3
416 Fluid Reaction Surfaces (i.e., Impellers) 1 0 1 0 1 3
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 2 0 0 1 0 3
454 Ventilation 2 0 0 0 1 3
493 Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web 0 2 1 0 0 3
710 Input/Output (Electrical Computers and Digital Processing Systems) 0 1 0 1 1 3
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 1 0 0 0 2 3
720 Dynamic Optical Information Storage or Retrieval 0 1 0 0 2 3
007 Compound Hand Tools 0 0 0 1 1 2
008 Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers 1 0 0 1 0 2
016 Miscellaneous Hardware 0 0 2 0 0 2
055 Gas Separation 0 1 0 0 1 2
063 Jewelry 1 1 0 0 0 2
099 Foods and Beverages: Apparatus 0 0 2 0 0 2
131 Tobacco 1 0 1 0 0 2
136 Batteries: Thermoelectric and Photoelectric 0 0 1 1 0 2
148 Metal Treatment 1 1 0 0 0 2
152 Resilient Tires and Wheels 0 0 0 1 1 2
162 Paper Making and Fiber Liberation 1 0 1 0 0 2
175 Boring or Penetrating the Earth 1 0 1 0 0 2
216 Etching a Substrate: Processes 0 0 0 1 1 2
246 Railway Switches and Signals 1 0 0 1 0 2
285 Pipe Joints or Couplings 1 0 0 0 1 2
303 Fluid-Pressure and Analogous Brake Systems 0 1 1 0 0 2
322 Electricity: Single Generator Systems 0 0 1 1 0 2
353 Optics: Image Projectors 0 0 0 2 0 2
360 Dynamic Magnetic Information Storage or Retrieval 0 0 1 0 1 2
418 Rotary Expansible Chamber Devices 0 0 1 0 1 2
442 Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) 0 0 1 0 1 2
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 1 0 0 0 1 2
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 0 0 1 1 0 2
001 ** Classification Undetermined ** 0 0 0 0 1 1
023 Chemistry: Physical Processes 0 0 0 0 1 1
024 Buckles, Buttons, Clasps, Etc. 0 0 1 0 0 1
028 Textiles: Manufacturing 1 0 0 0 0 1
037 Excavating 1 0 0 0 0 1
044 Fuel and Related Compositions 0 1 0 0 0 1
054 Harness for Working Animal 0 0 0 1 0 1
059 Chain, Staple, and Horseshoe Making 1 0 0 0 0 1
065 Glass Manufacturing 1 0 0 0 0 1
066 Textiles: Knitting 0 0 0 0 1 1
071 Chemistry: Fertilizers 1 0 0 0 0 1
092 Expansible Chamber Devices 0 0 0 0 1 1
104 Railways 0 0 1 0 0 1
105 Railway Rolling Stock 1 0 0 0 0 1
109 Safes, Bank Protection, or a Related Device 0 0 0 0 1 1
116 Signals and Indicators 0 0 0 0 1 1
122 Liquid Heaters and Vaporizers 1 0 0 0 0 1
124 Mechanical Guns and Projectors 0 0 1 0 0 1
157 Wheelwright Machines 0 1 0 0 0 1
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 0 0 0 1 0 1
169 Fire Extinguishers 0 0 1 0 0 1
172 Earth Working 0 0 1 0 0 1
190 Trunks and Hand-Carried Luggage 1 0 0 0 0 1
193 Conveyors, Chutes, Skids, Guides, and Ways 1 0 0 0 0 1
202 Distillation: Apparatus 1 0 0 0 0 1
203 Distillation: Processes, Separatory 0 0 0 0 1 1
212 Traversing Hoists 0 0 1 0 0 1
236 Automatic Temperature and Humidity Regulation 0 0 0 1 0 1
238 Railways: Surface Track 1 0 0 0 0 1
266 Metallurgical Apparatus 1 0 0 0 0 1
289 Knots and Knot Tying 1 0 0 0 0 1
299 Mining or In Situ Disintegration of Hard Material 0 0 1 0 0 1
323 Electricity: Power Supply or Regulation Systems 0 0 1 0 0 1
332 Modulators 0 0 0 1 0 1
338 Electrical Resistors 0 0 0 1 0 1
346 Recorders 0 0 0 1 0 1
347 Incremental Printing of Symbolic Information 0 1 0 0 0 1
373 Industrial Electric Heating Furnaces 0 0 1 0 0 1
376 Induced Nuclear Reactions: Processes, Systems, and Elements 1 0 0 0 0 1
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 1 0 0 0 0 1
383 Flexible Bags 1 0 0 0 0 1
384 Bearings 0 0 0 1 0 1
388 Electricity: Motor Control Systems 1 0 0 0 0 1
399 Electrophotography 0 0 1 0 0 1
406 Conveyors: Fluid Current 1 0 0 0 0 1
409 Gear Cutting, Milling, or Planing 1 0 0 0 0 1
420 Alloys or Metallic Compositions 1 0 0 0 0 1
472 Amusement Devices 0 0 1 0 0 1
474 Endless Belt Power Transmission Systems or Components 0 0 0 0 1 1
477 Interrelated Power Delivery Controls, Including Engine Control 0 0 0 0 1 1
483 Tool Changing 0 0 0 1 0 1
494 Imperforate Bowl: Centrifugal Separators 1 0 0 0 0 1
504 Plant Protecting and Regulating Compositions 0 1 0 0 0 1
505 Superconductor Technology: Apparatus, Material, Process 0 1 0 0 0 1
508 Solid Anti-Friction Devices, Materials Therefor, Lubricant or Separant Compositions for Moving Solid Surfaces, and Miscellaneous Mineral Oil Compositions 0 0 0 1 0 1
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 1 0 0 0 0 1
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 0 1 0 0 0 1
ALL ALL CLASSES 1313 1191 1410 1246 1232 6392


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Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT
P.O Box 1450
Alexandria VA 22313-1450

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

address of PTMT pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
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