Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Qualitative Analysis of Patents Concerning Cathode Active Materials for Lithium-Ion Secondary Batteries Based on Layer Structure

층상구조기반의 리튬이차전지용 양극 활물질에 관한 특허정성분석

  • Kim, Byung-Nam (Center for Innovative Engineering Education, Dankook University) ;
  • Lim, Yong-Hwan (Department of Chemical Engineering, Dankook University) ;
  • Lee, Chul-Tae (Department of Chemical Engineering, Dankook University)
  • Received : 2015.03.02
  • Accepted : 2015.05.04
  • Published : 2015.06.10
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Abstract

We have quantitatively analyzed 1,294 effective patents on "Quantitative Analysis of Patents Concerning Cathode Active Materials for Lithium-Ion Secondary Batteries Based on Layer Structure" from Korea, USA, Japan, Europe and PCT (WO). The importance of technological and patent values of the aforesaid patents were evaluated by the factors shown in Table 1, and 104 major and 20 core patents were selected in compliance with the evaluation from the patents. The technological flow chart over time regarding the selected major and core patents was prepared, and the applying time and development process of patents, as well as the position of core patents were established on the time scale investigated. Finally, the differentiation plans and patent avoidance strategies for the next technology development, in comparison with the technologies of patents already applied and registered, were suggested.

본 특허정성분석은 "층상구조 기반의 리튬이차전지용 양극 활물질"의 우리나라, 미국, 일본, 유럽, PCT (WO)의 유효특허 1,294건을 분석한 것으로, 특허가 갖는 기술 중요도 부분과 특허 중요도 부분으로 나누어 Table 1과 같은 기준으로 평가하였고, 이를 토대로 104건의 주요특허와 20건의 핵심특허를 선정하였다. 그리고 선정된 주요특허와 핵심특허를 시계열적 기술 흐름도로 작성하여 각 기술 분류별로 특허 출원 시점과 발전 과정, 핵심특허의 위치를 확인하였다. 마지막으로 특허 분석 내용을 토대로 향후 기술개발을 위하여 현재 출원 등록된 기술들과의 차별화 방안 및 회피전략을 제시하였다.

Keywords

References

  1. Z. Ogumi, Lithium Secondary Batteries, 9, 20-33, A-Jin, Seoul, Korea (2010).
  2. S. Pyun, Fundamentals and Practice of Battery, 261-289 Cheong Moon Gak, Paju, Korea (2003).
  3. J. Park, Principles and Applications of Lithium Secondary Batteries, 2-109, 414-457, Hongrung publishing company, Seoul, Korea (2010).
  4. S. Shuichi, Material Technologies for Large-Scale Lithium-Battery, 148-170, Dasom, Busan, Korea (2012).
  5. B. Kim, Y. Lim, and C.-T. Lee, Quantitative Analysis of Patents Concerning Cathode Active Materials for Lithium-Ion Secondary Batteries Based on Layer Structure, Appl. Chem. Eng., 26, 287-293 (2015). https://doi.org/10.14478/ace.2015.1026
  6. Y. H. Kim, Studies on Factors for Selection of Valid Patent, MS Dissertation, Hongik University, Seoul, Korea (2011).

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