Journal of Nanoparticle Research

, Volume 6, Issue 4, pp 325–354 | Cite as

International nanotechnology development in 2003: Country, institution, and technology field analysis based on USPTO patent database

  • Zan Huang
  • Hsinchun Chen
  • Zhi-kai Chen
  • Mihail C. Roco


Nanoscale science and engineering (NSE) have seen rapid growth and expansion in new areas in recent years. This paper provides an international patent analysis using the U.S. Patent and Trademark Office (USPTO) data searched by keywords of the entire text: title, abstract, claims, and specifications. A fraction of these patents fully satisfy the National Nanotechnology Initiative definition of nanotechnology (which requires exploiting specific phenomena and direct manipulation at the nanoscale), while others only make use of NSE tools and methods of investigation. In previous work we proposed an integrated patent analysis and visualization framework of patent content mapping for the NSE field and of knowledge flow pattern identification until 2002. In this paper, the results are updated for 2003, and the new trends are presented.

patent analysis knowledge discovery information visualization self-organizing map citation networks nanoscale science and engineering (NSE) nanotechnology technological innovation international interactions 


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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Zan Huang
    • 1
  • Hsinchun Chen
    • 1
  • Zhi-kai Chen
    • 1
  • Mihail C. Roco
    • 2
  1. 1.Artificial Intelligence Lab, Department of Management Information Systems, Eller College of ManagementThe University of ArizonaUSA
  2. 2.National Science Foundation

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