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International patent classification from the viewpoint of Japanese users

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  • Kataoka, Hiroshi

Abstract

To clarify the rules for IPC classification the Japanese Patent Office has issued a Working Standard for assigning IPCs to Patents the contents of which are briefly described in the article. In some selected groups the Japanese Patent Office uses a subdivision of the IPC so called 'Developing Marks' -- in others a special classification is done parallel to and based on another viewpoint than the IPC -- so called 'Facet Classification Marks'. Finally some proposals of Japan for the Int. Cl.4 are mentioned.

Suggested Citation

  • Kataoka, Hiroshi, 1981. "International patent classification from the viewpoint of Japanese users," World Patent Information, Elsevier, vol. 3(3), pages 110-113, July.
    • Handle: RePEc:eee:worpat:v:3:y:1981:i:3:p:110-113
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