195 1 year, patent experts from France, the Federal Republic of Germany, Britain, the Netherlands and other countries formed a classification working group, and * * * formulated an international patent classification. 1968 was published simultaneously in English and French.
Since then, the United States, Japan and other countries have also participated in the promotion work, and established the expanded IPC Federation, and the revision work was presided over by the World Intellectual Property Organization. The second to fifth editions were published in 1974, 1979, 1985 and 1989 respectively. Every edition has an index. IPC has translations in German, Japanese, Russian, Spanish, Portuguese and other languages, and all versions after version 2 have Chinese translations.
IPC classifies all technical contents related to invention patents step by step according to departments, divisions, categories, subcategories, main groups and groups. Form a complete hierarchical classification system. The whole table is divided into 8 series and 20 parts, and published in 9 volumes. Volume 1 ~ 8 is the detailed classification table, and volume 9 is the user guide and classification summary table (up to the main group level). In the international patent classification, the classification of IPC (the first category) is represented by A ~ H, which is just a classification title and not marked. The category number consists of the category number of the department plus 2 digits. The minor category number consists of department number, major category number and capital letters. The main group number consists of the small class number plus 2 digits. The group number consists of a slash and 2 ~ 5 digits after the main group number. For example, "A43D95/ 16 Shoe Polish Tool" (grouped) belongs to the daily necessities department (department number A), the major category of shoes (major category number A43), the minor category of machinery, tools, equipment and methods (minor category number A43D) and the major category number A43D of shoe finishing machinery.
International patent classification attempts to classify the scientific inventions and technical topics of patents as a whole, either by function or by application, not just by their components.
By the end of 1980s, more than 50 countries and regions in the world had marked IPC classification number in their published patent documents. Among them, 36 countries, 1 international organizations and 1 regional organizations are marked at the grouping level. There are 1 1 countries and 1 regional organizations marked as subclasses. Since 1 April 19851day, China has marked the IPC classification number in the published patent documents.
/pic/9 a 504 fc2d 56285357 133 16f 592 ef 76 c 6 a 6 ef 63 17？ x-bce-process=image/resize，m_lfit，w_360，limit_ 1