Dae-Hyun Jeong

Analysis of Technology of Green IT fields using patent information

This study analyzed that technological competition, variety and simility of Green IT fields using patents data. To achieve this, we limited range of Green IT that reduction of energy, eco-friendly technology. Therefore we conducted analysis of patents that power saving systems, light control system, smart system, cloud computing and green house/eco systems. As the result of that, power saving field was the most developed. The simililarty of power saving and cloud computing systems are very high and similiarities of light control system, green house/eco systems and smart system were very high.

The Methodology for constitute Knowledge Map of Green IT

In this paper, we review an outline as premise for environmental analysis of green IT which has basic stage through the world in order to make knowledge map of green IT. We can analyze genuine environment for green IT based on this premise, and we expect that we can also use to analyse power of competition based on intellectual property after performing these environmental analysis.

Network Analysis of Green Technology using Keyword of Green Field

In this study, the trend in green technology was observed and the domain of the green technology area that will be actively studied in the future was found by establishing knowledge map in green technology area and comparing and analyzing green technology information in Korea and overseas in time series. For the purpose of this study, network analysis was conducted for the keyword of green technology information provided by green technology information portal site (www.gtnet.go.kr) operated by Korea Institute of Science and Technology Information. Network analysis was conducted using keyword, and change of study subject was found by dividing the analysis result into periods. In the result of network analysis on top 100 keywords from total English keyword, it was found that renewable energy related areas such as solar energy and biomass had high centrality. When the main keyword trend by year was studied, centrality of solar cell, nanotechnology, smart grid, and fuel cell were found to increase, showing that research and development in generation and use of renewable energy are actively made.

Technology Relevance Analysis between Wind Power Energy - Fuel Cell - Green Car using Network Analysis, IPC Map

Many countries in the world are rapidly moving toward the “Green Economy”, reducing CO2 emission, and the competitiveness of a growth model that requires a large amount of input of fossil fuel like oil and gas is greatly declining due to weather change and energy price instability. To resolve this concern and cope with fossil fuel depletion, renewable energies like wind power energy and fossil fuel replacement cells are being developed, and it is projected that research and development to use the electricity produced by renewable energy will be continued. Recently, green technologies are being developed through technology convergence, and industry areas are expected to be reorganized through technology convergence. In this study, we analyzed the associative relation between green technologies using patent information and the representative technology information. We analyzed convergence trends using the number of cases related to the 8 items included in the 3 areas (wind power energy, fuel cell, green car), the similarity of the 8 items, IPC network relationship of the 8 items, degree centrality of network, betweenness centrality and mapping related IPC with the 3 areas. With this analysis we determined the order of priority for core technology research development for invigorating the industry. The results showed that wind power generator, electric propulsion device, and energy storage device technologies should be developed, and the main technologies necessary for convergence was analyzed to be magnetic charge measurement, digital data handling and structural pairing of electric connections.

LED Knowledge Map through Competition Analysis based on Intellectual Property

In this paper, we provide a basic data to constitute knowledge map through analysis of competition situation such as analysis of patent activity for each nationality, analysis of patent activity for each applicant for a patent, analysis of patent activity for each technical area and analysis of competition status for power of security for market which consider qualitative level. In order to analysis LED data, we choose patent data of LED.

Analysis on Patent Activity and Technical Diversity in Green Car Fields

Patent activity was analyzed using green car-related patents according to the country and applicant. Green car-related R&D has been actively underway in advanced countries such as the U.S., and Japan, and recently, Korea has joined it by developing hybrid electric vehicles, electric vehicles, and fuel cell electric vehicles. Among green car-related patent applicants, Toyota motor in Japan has the largest percentage of the latest patents, and Honda Giken Kogyo has the largest percentage of triadic patents. As a result of comprehensive review of the number of patents, and the percentages of the latest patents and triadic patents in green car fields, it was found that the U.S. and Japan have excellent patent activity, while Korea has a low percentage of triadic patents. It was analysed that the percentages of the latest patents in Korea was relatively higher for fuel cell electric vehicles but lower for clean diesel vehicles and hybrid electric vehicles among green car fields than in advanced countries. Technical diversity by country was analyzed with hybrid electric vehicles (HEV), electric vehicles (EV), clean diesel vehicles (CDV), and fuel cell electric vehicles (FCEV).

Analysis on Technology Competitiveness in Fuel Cell Field

Abstract—Fuel cell is an environment-friendly renewable energy source. Major countries that are trying to diversify their power supply are expanding their technology development and efforts to spread the usage of fuel cell. In this study, the level of usage in each country was analyzed through technology competitiveness analysis on fuel cell. To analyze technology competitiveness, total four elements of influence, competitiveness, activity, and open innovation were considered. Influence was calculated using forward citation of applied patent, and competitiveness was calculated using the number of patent family. For open innovation, joint application network between countries was settled and analysis was made through degree centrality. In the result, besides MCFC field, USA was found to be the most competitive, while Japan and Korea were found to be relatively less competitive. When it was studied by a major element, USA had a high level of competitiveness and open innovation, and Canada had high level of influence.

Analysis on Technical Competitiveness among Major Applicants in Secondary Battery Fields

Lithium-ion secondary batteries are used for electric vehicles and energy storage systems. This study comprehensively examines national competitiveness and technology development strategy for secondary batteries, using the patent information on major countries and cluster analysis by major patent applicant for secondary battery fields. The results showed that England and Italy had high patent levels for secondary battery manufacturing, while Korea and France had high patent levels for lithium-ion secondary battery electrodes. Italy showed a high patent level for detailed structures of lithium secondary batteries apart from power generating components, while Germany showed a high patent level for RFB (Redox Flow Battery) and NaS batteries, for which research is actively underway recently. It was also discovered that major applicants have been conducting joint R&D for developing medium and large secondary batteries, and the applicants who are developing secondary batteries for vehicles are especially making a great effort to build clusters and exchange technologies among the applicants.