U.S. PATENT AND TRADEMARK OFFICE Information Products Division Technology Assessment and Forecast (TAF) Branch |
Class | Class Title | 1996 | 1997 | 1998 | 1999 | 2000 | Total |
502 | Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making | 3 | 6 | 7 | 3 | 2 | 21 |
208 | Mineral Oils: Processes and Products | 1 | 2 | 3 | 6 | 2 | 14 |
516 | Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting | 4 | 3 | 1 | 1 | 1 | 10 |
423 | Chemistry of Inorganic Compounds | 0 | 1 | 3 | 1 | 2 | 7 |
075 | Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures | 0 | 0 | 1 | 1 | 4 | 6 |
044 | Fuel and Related Compositions | 0 | 0 | 2 | 3 | 0 | 5 |
210 | Liquid Purification or Separation | 0 | 0 | 1 | 3 | 1 | 5 |
507 | Earth Boring, Well Treating, and Oil Field Chemistry | 0 | 2 | 1 | 2 | 0 | 5 |
510 | Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions | 1 | 1 | 1 | 0 | 1 | 4 |
532 | Organic Compounds (includes Classes 532-570) | 0 | 1 | 1 | 1 | 1 | 4 |
073 | Measuring and Testing | 1 | 0 | 1 | 0 | 1 | 3 |
137 | Fluid Handling | 2 | 0 | 1 | 0 | 0 | 3 |
585 | Chemistry of Hydrocarbon Compounds | 0 | 0 | 0 | 3 | 0 | 3 |
052 | Static Structures (e.g., Buildings) | 1 | 1 | 0 | 0 | 0 | 2 |
110 | Furnaces | 2 | 0 | 0 | 0 | 0 | 2 |
123 | Internal-Combustion Engines | 0 | 1 | 0 | 1 | 0 | 2 |
175 | Boring or Penetrating the Earth | 0 | 0 | 0 | 1 | 1 | 2 |
181 | Acoustics | 1 | 0 | 0 | 0 | 1 | 2 |
222 | Dispensing (apparatus and process) | 0 | 0 | 0 | 2 | 0 | 2 |
250 | Radiant Energy | 1 | 0 | 1 | 0 | 0 | 2 |
340 | Communications: Electrical | 1 | 0 | 0 | 1 | 0 | 2 |
417 | Pumps | 1 | 0 | 0 | 0 | 1 | 2 |
432 | Heating | 0 | 1 | 0 | 0 | 1 | 2 |
435 | Chemistry: Molecular Biology and Microbiology | 0 | 0 | 0 | 1 | 1 | 2 |
439 | Electrical Connectors | 0 | 1 | 0 | 1 | 0 | 2 |
708 | Arithmetic Processing and Calculating (Electrical Computers) | 1 | 1 | 0 | 0 | 0 | 2 |
005 | Beds | 0 | 0 | 0 | 1 | 0 | 1 |
008 | Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers | 1 | 0 | 0 | 0 | 0 | 1 |
015 | Brushing, Scrubbing, and General Cleaning | 1 | 0 | 0 | 0 | 0 | 1 |
029 | Metal Working | 0 | 0 | 0 | 0 | 1 | 1 |
055 | Gas Separation | 0 | 1 | 0 | 0 | 0 | 1 |
072 | Metal Deforming | 0 | 1 | 0 | 0 | 0 | 1 |
089 | Ordnance | 0 | 0 | 1 | 0 | 0 | 1 |
091 | Motors: Expansible Chamber Type | 0 | 0 | 0 | 1 | 0 | 1 |
100 | Presses | 0 | 0 | 0 | 0 | 1 | 1 |
122 | Liquid Heaters and Vaporizers | 0 | 0 | 0 | 1 | 0 | 1 |
126 | Stoves and Furnaces | 0 | 0 | 1 | 0 | 0 | 1 |
141 | Fluent Material Handling, with Receiver or Receiver Coacting Means | 1 | 0 | 0 | 0 | 0 | 1 |
166 | Wells (shafts or deep borings in the earth, e.g., for oil and gas) | 0 | 0 | 0 | 0 | 1 | 1 |
204 | Chemistry: Electrical and Wave Energy | 0 | 0 | 0 | 0 | 1 | 1 |
242 | Winding, Tensioning, or Guiding | 0 | 0 | 0 | 1 | 0 | 1 |
264 | Plastic and Nonmetallic Article Shaping or Treating: Processes | 0 | 0 | 0 | 1 | 0 | 1 |
266 | Metallurgical Apparatus | 0 | 0 | 0 | 0 | 1 | 1 |
404 | Road Structure, Process, or Apparatus | 0 | 0 | 0 | 1 | 0 | 1 |
410 | Freight Accommodation On Freight Carrier | 1 | 0 | 0 | 0 | 0 | 1 |
424 | Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) | 0 | 1 | 0 | 0 | 0 | 1 |
425 | Plastic Article or Earthenware Shaping or Treating: Apparatus | 0 | 0 | 0 | 0 | 1 | 1 |
433 | Dentistry | 0 | 0 | 1 | 0 | 0 | 1 |
441 | Buoys, Rafts, and Aquatic Devices | 0 | 0 | 0 | 1 | 0 | 1 |
520 | Synthetic Resins or Natural Rubbers (includes Classes 520-528) | 0 | 1 | 0 | 0 | 0 | 1 |
604 | Surgery (Medicators and Receptors) | 0 | 0 | 0 | 0 | 1 | 1 |
606 | Surgery (instruments) | 0 | 0 | 0 | 1 | 0 | 1 |
700 | DP: Generic Control Systems or Specific Applications (Data Processing) | 1 | 0 | 0 | 0 | 0 | 1 |
ALL | ALL CLASSES | 25 | 25 | 27 | 39 | 27 | 143 |
U.S. Patent and Trademark Office
Information Products Division - TAF Branch
PK3- Suite 441
Washington, DC 20231 tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov address of TAF Internet pages : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of TAF reports from : ftp.uspto.gov/pub/taf/