USPC-IPC Correspondence

The USPC and IPC systems were harmonized using the concordance provided by ReedTech at http://patents.reedtech.com/classdata.php. In order to simplify the classification of patents, we compared all IPCs found in the OECD's database to the USPTO classes liked in ReedTech's concordance table and assigned them to the appropriate USPTO label. 2 columns, 183K lines, "|" delimited; the columns are:--USPC: the USPC--IPC: the IPCs that are found in our database that are equivalent to that USPC. If more than one IPC is equivalent, they are separated by a ",".<br>

本数据集依托ReedTech提供的对应对照表（链接：http://patents.reedtech.com/classdata.php）完成美国专利分类体系（USPC, United States Patent Classification）与国际专利分类体系（IPC, International Patent Classification）的协调统一。为简化专利分类流程，我们将经济合作与发展组织（OECD, Organisation for Economic Co-operation and Development）数据库中收录的全部IPC号，与ReedTech对应表中关联的美国专利商标局（USPTO, United States Patent and Trademark Office）分类进行比对，并将其映射至对应的USPTO分类标签。本数据集共2列、18.3万行，采用竖线（|）作为分隔符，各列说明如下：
--USPC：美国专利分类体系（USPC）编号
--IPC：本数据集收录的与该USPC等效的国际专利分类体系（IPC）编号；若存在多个等效IPC，则以逗号分隔。