A novel approach to explore patent development paths for subfield technologies

Jae Ha Gwak, So Young Sohn

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Many algorithms for searching the main paths according to a subfield technology have been suggested using patent citation networks. However, the process by which the specific field is divided into subfields is problematic, in the sense that citation information among individual patents in different subfields is lost. If convergence technologies are common among different subfields, this problem can result in an inappropriate main path being found. To resolve this problem, we propose a new algorithm capable of extracting the main paths for each subfield of a technology by using the International Patent Classification (IPC) codes of patents. The proposed algorithm is applied to the waste management field to allow core technologies in the subfields of waste disposal, waste treatment, and the reuse of waste materials to be found. Finally, a sensitivity analysis is performed by considering the standard of the component ratio along a specific path to demonstrate the robustness of the proposed algorithm in the waste management field.

Original languageEnglish
Pages (from-to)410-419
Number of pages10
JournalJournal of the Association for Information Science and Technology
Issue number3
Publication statusPublished - 2018 Mar

Bibliographical note

Publisher Copyright:
© 2017 ASIS&T

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications
  • Information Systems and Management
  • Library and Information Sciences


Dive into the research topics of 'A novel approach to explore patent development paths for subfield technologies'. Together they form a unique fingerprint.

Cite this