* Data are calculated estimates based on identified and available U.S. geographies. Not all U.S. geographies and/or patents are included due to spelling variations and errors of geography names committed by patent applicants. Estimates do not include international filings. Use extreme caution when comparing across time and geographies.
Years Available: 2007–2014
Permanent Link: http://data.sagepub.com/sagestats/13818
General Notes: Classification code 324, Electricity: Measuring and Testing. For more details, please visit http://www.uspto.gov/web/patents/classification/uspc324/defs324.htm. Patents and patent applications are filed by the United States Patent Classification (USPC) code system developed by the U.S. Patent and Trademark Office (USPTO) in the Department of Commerce. Total counts are aggregated by geography and classification for which there is available data. Classifications available on SAGE Business Stats represent the top 10% classifications the USPTO uses to categorize patents and patent applications. In some cases, the original classification name was retitled for clarity.