CPC subclass reclassification
收藏DataCite Commons2026-03-02 更新2026-04-25 收录
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https://ssh.datastations.nl/citation?persistentId=doi:10.17026/SS/MEV4KE
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资源简介：
Three datasets are included, each corresponding to a different moment of CPC reclassification: 2013/2016, 2016/2019, 2019/2023. Each dataset includes the number of docdb patent families (with at least one US member and size greater than 1) of each subclass before reclassification (n), the number of classifications added (rp), and the number of classifications deleted (rn) for each earliest filing year between 1985 and 2019.
提供机构：
DANS Data Station Social Sciences and Humanities
创建时间：
2026-02-24
