• Patent21
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• 통권90호
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• pp.50-51
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• 2010

• Patent21
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• 통권54호
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• pp.44-44
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• 2004

• Patent21
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• 통권93호
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• pp.50-51
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• 2011

• Patent21
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• 통권87호
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• pp.50-51
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• 2009

• Patent21
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• 통권73호
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• pp.46-46
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• 2007

• Patent21
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• 통권70호
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• pp.46-48
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• 2006

• Patent21
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• 통권74호
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• pp.47-47
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• 2007

• Patent21
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• 통권75호
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• pp.46-46
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• 2007

• 한국의류산업학회지
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• 제9권3호
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• pp.295-302
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• 2007

Phase change material-related patents filed at Korea Institute of Patent Information(KIPI) and United States Patent and Trademark Office(USPTO) were analyzed for understanding the PCM's technological level of Korea and providing the information for establishing the research development policy concerned with high technology fibers. Patent data from 1980 to 2005 collected from KIPI and USPTO internet sites were examined using the number of patents and share of assignees in patents. The contents of patent were classified according to IPC(International Patent Classification) and assignees were divided into individual and firm/public body. The results of comparing total number of patents in USA with that in Korea showed USA had as 2.3 times as Korea had. The number of patents of USA had increased steadily since 1980 whereas that of Korea sharply since 2001. The number of patents of Korea from 2001 to 2005 was more than that of USA. USA was specialized in fundamental technology and Korea was specialized in application area with PCM. Assignees who had the most patents were firms and the next were individuals. Assignees who applied for several patents were more in USA than in Korea and patent application numbers per the assignees were higher for USA.

• Patent21
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• 통권70호
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• pp.43-43
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• 2006

한국특허정보원은 지식정보와 사회에 부응하는 국가 특허기술정보 인프라(infra)를 구축하고 우수발명의 창출과 첨단기술개발의 도우미 역활을 수행하며,산업계,학계 및 연구소 등에 국내.외 산업재산권 정보를 효율적으로 보급.산업의 국가경쟁력을 제고하고 기술발전에 기여함을 목적으로 설립된 특허청 산하특허기술정보서비스 전문기관입니다.