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Classification of citations between patents on the basis of their functions

Research Project

Project/Area Number 21K12592
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90020:Library and information science, humanistic and social informatics-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Yoshikane Fuyuki  筑波大学, 図書館情報メディア系, 教授 (30353428)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords図書館情報学 / 情報図書館学 / 引用分析 / 科学社会学 / 科学計量学 / 計量情報学 / 計量書誌学 / 引用分類
Outline of Research at the Start

特許間の引用関係は,技術再活用や累積的な技術革新を示唆するものとして,技術動向の把握や予測に応用されるが,学術論文における引用と同様,特許の引用にも様々な種別が存在すると考えられる。特許の引用情報から,より精緻で具体的な示唆を得るためには,まず引用種別の類型を整理する必要があると考え,本研究は,引用が担う機能の差異に着目した類型化を行う。日本の出願特許を対象に,生起する引用の機能を調査した上で,それらの類型を系統的に整理することを主たる目的とする。あわせて,特許が受ける引用の種別の時系列変化にも着目し,特許の特性と引用種別の傾向の変化との関係を明らかにする。

Outline of Final Research Achievements

Patent citations were categorized from multiple perspectives, including the functional perspective. However, as a result of investigating time-series changes in the distribution of citation types (i.e., categories in classification) from the perspective of the function of citations, no clear trend of change was observed in the distribution of citation relationships between documents.
On the other hand, some trends over time were observed in the relationships between research areas of documents. For example, in the field of environmental science, although the number of directly connected areas has not changed significantly, the cohesiveness of the relationships between areas has become stronger. Given the increasing popularity of cross-disciplinary research and development, it was suggested that it is difficult to identify bibliographic features that are closely related to patterns of changes in the types of patent citations unless we also pay attention to such characteristics of fields.

Academic Significance and Societal Importance of the Research Achievements

特許の特性に関する分析において,経済的価値でなく,引用関係が表す技術・知識の系譜における位置づけに注目している研究は未だ少ない。特許間引用に着目することで,短期的に利益を上げるというより,長期的視野のもとで研究開発を活性化させるための示唆(学術研究の技術革新への影響に関する,研究機関・国の科学技術政策への示唆)が得られると期待できる。
特に,特許の機能的な引用種別を調査し,それらの類型化を通して俯瞰的な概念・観点整理を行い,それらの観点から特許の特徴を明らかにすることにより,知財戦略や研究開発戦略に資する知見が得られると期待できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Progress in Interdisciplinarity: Bibliometric Analysis of the Diversity of Researchers’ Fields of Specialization Over a 20-Year Period2022

    • Author(s)
      Takei Chizuko、Kikkawa Jiro、Yoshikane Fuyuki
    • Journal Title

      Library and Information Science Research E-Journal

      Volume: 32 Issue: 1 Pages: 64-80

    • DOI

      10.32655/libres.2022.1.5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dataset of first appearances of the scholarly bibliographic references on Wikipedia articles2022

    • Author(s)
      Kikkawa Jiro、Takaku Masao、Yoshikane Fuyuki
    • Journal Title

      Scientific Data

      Volume: 9 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s41597-022-01190-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Time-series Analyses of the Editors and Their Edits for Adding Bibliographic References on Wikipedia2021

    • Author(s)
      吉川次郎, 高久雅生, 芳鐘冬樹
    • Journal Title

      Joho Chishiki Gakkaishi

      Volume: 31 Issue: 1 Pages: 3-19

    • DOI

      10.2964/jsik_2020_037

    • NAID

      130008005155

    • ISSN
      0917-1436, 1881-7661
    • Year and Date
      2021-02-28
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Extrinsic factors affecting citation frequencies of research articles2021

    • Author(s)
      Onodera, Natsuo and Yoshikane, Fuyuki
    • Journal Title

      Predicting the Dynamics of Research Impact

      Volume: 1 Pages: 23-49

    • DOI

      10.1007/978-3-030-86668-6_2

    • ISBN
      9783030866679, 9783030866686
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Properties of an indicator of citation durability of research articles2021

    • Author(s)
      Onodera, Natsuo and Yoshikane, Fuyuki
    • Journal Title

      Predicting the Dynamics of Research Impact

      Volume: 1 Pages: 123-149

    • DOI

      10.1007/978-3-030-86668-6_6

    • ISBN
      9783030866679, 9783030866686
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Long-term progress of DOI links on Wikipedia: comparative analysis of English and Japanese Wikipedia from 2015 to 20232023

    • Author(s)
      Kikkawa, Jiro; Takaku, Masao and Yoshikane, Fuyuki
    • Organizer
      Asia-Pacific Conference on Library & Information Education & Practice 2023 (A-LIEP 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantitative analysis of scholarly references on YouTube: focusing on their research fields and contributors2023

    • Author(s)
      Kikkawa, Jiro; Takaku, Masao and Yoshikane, Fuyuki
    • Organizer
      25th International Conference on Asia-Pacific Digital Libraries (ICADL 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Time lag analysis of adding scholarly references to English Wikipedia: how rapidly are they added to and how fresh are they?2023

    • Author(s)
      Kikkawa, Jiro; Takaku, Masao and Yoshikane, Fuyuki
    • Organizer
      The 18th International Conference, iConference (iConference 2023)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of the deletions of DOIs: what factors undermine their persistence and to what extent?2022

    • Author(s)
      Kikkawa, Jiro; Takaku, Masao and Yoshikane, Fuyuki
    • Organizer
      The 26th International Conference on Theory and Practice of Digital Libraries (TPDL 2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Progress in interdisciplinarity: from the perspectives of diversity of researchers' fields of specialization2021

    • Author(s)
      Takei, Chizuko; Kikkawa, Jiro and Yoshikane, Fuyuki
    • Organizer
      Asia-Pacific Conference on Library & Information Education & Practice 2021 (A-LIEP 2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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