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The international patent classification as a search tool

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  • Vijvers, W. G.

Abstract

Many databases contain information on patents, which can be searched as any other kind of literature. Additionally, however, on all patent documents are printed one or more symbols of the International Patent Classification (IPC), which are recorded in the online files. This paper first gives some background information on the IPC, its change in the course of years, then concentrates on the practical aspects of using the IPC as a search tool. Examples are given based on the author's own experience. Attention is drawn to pitfalls connected with IPC searching and to ways of combining the IPC with other search parameters. It is not the purpose of this paper to criticize the IPC or to express views on its future.

Suggested Citation

  • Vijvers, W. G., 1990. "The international patent classification as a search tool," World Patent Information, Elsevier, vol. 12(1), pages 26-30.
    • Handle: RePEc:eee:worpat:v:12:y:1990:i:1:p:26-30
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    Cited by:

    1. Sebastian Eidam & Anja Redenz & David Sonius & Nicole vom Stein, 2017. "Ubiquitous Healthcare — Do the Health and Information Technology Sectors Converge?," International Journal of Innovation and Technology Management (IJITM), World Scientific Publishing Co. Pte. Ltd., vol. 14(06), pages 1-23, December.
    2. Quan Guo & Min Zhou & Nana Liu & Yaoyu Wang, 2019. "Spatial Effects of Environmental Regulation and Green Credits on Green Technology Innovation under Low-Carbon Economy Background Conditions," IJERPH, MDPI, vol. 16(17), pages 1-16, August.
    3. Martin Kalthaus, 2017. "Identifying technological sub-trajectories in photovoltaic patents," Jena Economics Research Papers 2017-010, Friedrich-Schiller-University Jena.
    4. Bruns, Stephan B. & Kalthaus, Martin, 2020. "Flexibility in the selection of patent counts: Implications for p-hacking and evidence-based policymaking," Research Policy, Elsevier, vol. 49(1).
    5. José Lobo & Deborah Strumsky, 2019. "Sources of inventive novelty: two patent classification schemas, same story," Scientometrics, Springer;Akadémiai Kiadó, vol. 120(1), pages 19-37, July.
    6. Yoonhwan Oh & Jungsub Yoon & Jeong-Dong Lee, 2016. "Evolutionary Patterns of Renewable Energy Technology Development in East Asia (1990–2010)," Sustainability, MDPI, vol. 8(8), pages 1-24, July.

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