US Classification
The United States uses multiple classification systems, including national security levels (Confidential, Secret, Top Secret), patent classifications, and business/industry classifications (NAICS).
National Security Classification
The U.S. government classifies information to protect national security under Executive Order 13526, issued in 2009. There are three primary levels of classification: Confidential, Secret, and Top Secret, each indicating increasing sensitivity and potential damage to national security if disclosed. Access to classified information requires both the appropriate clearance level and a legitimate need-to-know. Additional compartments, such as Sensitive Compartmented Information (SCI) and Special Access Programs (SAP), further restrict access to highly sensitive information, even for those with Top Secret clearance. Classification is governed by executive order rather than statute, except for nuclear-related information under the Atomic Energy Act .
Patent Classification
The United States Patent and Trademark Office (USPTO) organizes patents using a detailed classification system to categorize inventions by technology and subject matter. This system allows users to search patents efficiently and understand the scope of technological innovation. Keywords, class numbers, and definitions are used to navigate the classification schedule, which is regularly updated to reflect new technologies .
Business and Industry Classification
The North American Industry Classification System (NAICS) is used by federal statistical agencies to classify business establishments for economic data collection and analysis. Adopted in 1997 to replace the Standard Industrial Classification (SIC) system, NAICS provides a standardized framework across the U.S., Canada, and Mexico. It enables comparability of business statistics and supports economic research, policy-making, and reporting .
Summary
In the U.S., "classification" can refer to:
- Government security classification: Protects sensitive national security information with levels from Confidential to Top Secret, including special compartments for highly sensitive data .
- Patent classification: Organizes inventions for efficient search and examination by the USPTO .
- Industry/business classification: Standardizes economic data collection and reporting through NAICS . Each system serves a distinct purpose, whether safeguarding national security, managing intellectual property, or analyzing economic activity.
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