Difference between revisions of "Patent classification systems"

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(fill out US history here)
(→‎National systems: updated list of US classifications)
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** [[USPC]] -- US standards used officially from maybe 1912 till at least 2013, start date uncertain
 
** [[USPC]] -- US standards used officially from maybe 1912 till at least 2013, start date uncertain
 
** [[NBER patent classifications]] - a grouping of the USPC system into larger simpler clusters, used in economics research especially
 
** [[NBER patent classifications]] - a grouping of the USPC system into larger simpler clusters, used in economics research especially
** [[US1 patent classification]] - 1830-1836
+
** [[US1830 patent classification]] - 1830-1836
** [[US2 patent classification]] - 1836-1872
+
** [[US1836 patent classification]] - 1836-1867
** [[US3 patent classification]] - 1872-1898?
+
** [[US1867 patent classification]]
** [[US4 patent classification]] - 1898-1912?
+
** [[US1872 patent classification]]
 +
** [[US1878 patent classification]]
 +
** [[US1899 patent classification]]
 +
** [[US1900 patent classification]]
 +
 
 +
US1830 patent classification, US1836 patent classification, US1867 patent classification, US1872 patent classification, US1878 patent classification, US1899 patent classification, US1900 patent classification, USPC, United States Patent Classification system, NBER patent classifications
  
 
{{Techtype
 
{{Techtype

Revision as of 15:15, 24 November 2019

There have been many patent classification systems, and any that helpfully classify aero patents in our period are relevant to include here.

International/global systems

  • the CPC category system is the most modern and global, started 2010
  • the IPC is the predecessor to the CPC, started 1971, per Wang (2018)]]
    • IPC1-7 - an IPC version or variant
    • sometimes there are specific references to the 2006 or other dates of one of these

National systems

US1830 patent classification, US1836 patent classification, US1867 patent classification, US1872 patent classification, US1878 patent classification, US1899 patent classification, US1900 patent classification, USPC, United States Patent Classification system, NBER patent classifications

Enclosing categories Techtype
Subcategories CPC, IPC, IPC1-7, Australian patent classifications, Austrian patent classifications, Belgian patent classifications, British patent classifications, Canadian patent classifications, French patent classifications, German patent classifications, Swedish patent classifications, Swiss patent classifications, US patent classification systems, USPC
Keywords
Start year
End year