Browse > Article
http://dx.doi.org/10.7464/ksct.2012.18.2.144

A Patent Analysis on Coal Gasification Technology  

Moon, Seong-Geun (Department of Chemical Engineering, University of Seoul)
Jung, Yung-Hoon (Department of Chemical Engineering, University of Seoul)
Kim, Yoon-Jung (Department of Chemical Engineering, University of Seoul)
Chung, Yon-Soo (Department of Chemical Engineering, University of Seoul)
Publication Information
Clean Technology / v.18, no.2, 2012 , pp. 144-154 More about this Journal
Abstract
Technology trends of coal gasification were studied through patent analysis. The patents published or registered in Korea, U. S. A., Japan and Europe, and administered by the World Intellectual Property Organization from mid 1970s to 2010 were analyzed based on the application tendency, patent share, major applicants and their activity indices, and market power, etc. Japan and U. S. A. led the patent activities in the early phase of technology development, but major applicants had been diversified globally since 2000. Portfolio analysis revealed that the technology was under developing period. The analysis showed that the most active R&D had been focused on gasifier development. Technology competitiveness was analyzed via indices such as cites per patent, patent impact index, technology strength and patent family size, etc. Key patents were extracted through quantification based on patent family size and cites per patent. The technology flow was figured out to reveal the technology trends.
Keywords
Coal gasification; Patent analysis; Gasifier; Syngas; Coal;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Yoo, Y. D., Yun, Y., Park, H. Y., and Ahn, D. H., "Gasification Characteristics in an Entrained Flow Coal Gasifier," Trans. Korean Soc. Mech. Eng. (B), 21(12), 1690-1700 (1997).
2 Lee, J. G., and Lee, S. H., "Coal Gasification Processes and R&D Status," KIC News, 11(1), 26-37 (2008).
3 Cormos, C.-C., Starr, F., and Tzimas, E., "Use of Lower Grade Coals in IGCC Plants with Carbon Capture for the Co-production of Hydrogen and Electricity," Int. J. Hydrogen Energy, 35, 556-567 (2010).   DOI   ScienceOn
4 Matsuoka, K., Kajiwara, D., and Kuramoto, K., "Factors Affecting Steam Gasification Rate of Low Rank Coal Char in a Pressurized Fluidized Bed," Fuel Proc. Technol., 90, 895-900 (2009).   DOI   ScienceOn
5 Maroto-Valer, M. M., Lu, Z., and Zhang, Y., "Sorbents for $CO_2$ Capture from High Carbon Fly Ashes," Waste Manage., 28, 2320-2328 (2008).   DOI   ScienceOn
6 http://search.wips.co.kr
7 http://www.kipris.or.kr
8 http://www.uspto.gov
9 http://www.epo.org
10 http://www.ipdl.ncipi.go.jp/homepg.ipdl
11 Jo, H., Moun, S. G., Jo, Y. M., and Chung, Y., "A Patent Analysis on Impurity Removal and Catalysts for Crude Oil Purification," Clean Technol., 16(1), 1-11 (2010).
12 Moon, S. G., Kim, Y., and Jung, Y. H., "A Patent Analysis on Coal Gasification Technology Using Low Rank Coal," Report for 2010 Campus Patent Strategy Universiade, (2010).
13 Ra, H. W., Lee, S. H., Yoon, S. J., Choi, Y. C., Kim, J. H., and Lee, J. G., "Entrained Flow Coal Water Slurry Gasification," Korean Chem. Eng. Res., 48(2), 129-139 (2010).
14 Kim, H.-T., Lee, J. W., and Yun, Y., "Development Status of Coal Gasifier," Chem. Ind. Technol., 13(5), 459-465 (1995).