Table 6-14
Patenting activity in selected clean energy and pollution control technologies, by selected region/country: 2007–10
(Activity index)
 
Technology United States   EU Japan South Korea
 
All clean energy and pollution control technologies 0.95   1.14 1.16 0.94
Alternative energy 0.92   1.24 1.22 0.87
Bioenergy 1.32   1.26 0.23 0.11
Fuel cells 0.79   0.92 1.65 1.46
Hybrid electric 0.76   0.89 2.02 0.78
Nuclear 0.96   1.94 0.79 1.26
Solar 1.13   1.01 0.80 0.50
Wind 0.86   2.92 0.31 0.19
Energy storage 0.73   0.54 1.71 2.58
Batteries 0.42   0.35 2.09 4.74
Hydrogen power and storage 1.16   0.86 0.95 0.62
Smart grid 1.23   1.02 0.50 0.48
Pollution mitigation 1.03   1.33 0.96 0.40
Air 0.92   1.50 1.30 0.38
Capture and storage of carbon and other greenhouse gases 1.18   1.55 0.48 0.36
Cleaner coal 1.43   0.89 0.34 0.33
Solid waste 1.10   1.39 0.41 0.56
Water 1.20   0.98 0.53 0.56
 

EU = European Union; USPTO = U.S. Patent and Trademark Office

NOTES: Clean energy and pollution control technologies include alternative energy, energy storage, smart grid, and pollution mitigation. Alternative energy includes solar, wind, nuclear, bioenergy, hydropower, wave/tidal/ocean, geothermal, and electric/hybrid. Energy storage includes batteries, compressed air, flywheels, superconductivity, magnet energy systems, ultracapacitors, hydrogen production and storage, and thermal energy. Pollution mitigation includes recycling; control of air, water, and solid waste pollution; environmental remediation; cleaner coal; and capture and storage of carbon and other greenhouse gases. Technologies classified by The Patent Board™. Patent grants fractionally allocated among regions/countries on basis of proportion of residences of all named inventors. EU includes current member countries. Activity index consists of ratio of region/country's share of indicated technology to region/country's share of total grants. A ratio of greater than one signifies more active patenting in the selected technology; a ratio of less than one signifies less active patenting.

SOURCE: The Patent Board™, special tabulations (2011) of Proprietary Patent database. See appendix tables 6-66–6-84.

Science and Engineering Indicators 2012