Hierarchy and concentration in the American urban system of technological advance

Paul J. Maliszewski, Breandan O'Huallachain

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


This paper investigates aspects of the urban hierarchy and concentration of patent sub-categories in United States metropolitan areas by estimating Zipf, Gini and Moran's I coefficients. Results do not support a power law depiction of the location of disaggregate patenting in the entire metropolitan system. The most concentrated and hierarchical patent technologies are computer hardware and software, computer peripherals, information storage, communications, surgery and medical instruments, nuclear and x-rays, semiconductor devices, optics and organic compounds. Technologies are cross-classified, which reveals aspects of variety in locational patterns and offers clues into systems of knowledge exchange in urban-based technological advance.

Original languageEnglish (US)
Pages (from-to)743-758
Number of pages16
JournalPapers in Regional Science
Issue number4
StatePublished - Nov 2012


  • Agglomeration
  • Concentration
  • Invention
  • Patents
  • Zipf's law

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Environmental Science (miscellaneous)


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