Breadth and Depth of Main Technology Fields: An Empirical Investigation Using Patent Data

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2007

Author

Özman, Müge

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Recently work on technological change has emphasized the importance and implications of di§erent knowledge bases among industries in terms of innovative potential. In some industries, products and processes have become more complex, as well as there appears to be increased convergence in some market segments. Although increasing attention has been given to features of knowledge bases, there have been limited empirical research on how to measure them. In this paper a method is proposed to measure empirically the breadth and depth dimensions of main technology Öelds, sectors and Örms in the economy. For this purpose, we measure the knowledge bases of 30 main technology Öelds by using the concepts of breadth and depth. Breadth corresponds to the range of di§erent subjects that a technology Öeld draws upon. Depth refers to the extent to which a certain Öeld is exploited in detail. We position the main technology Öelds in the breadth and depth space by utilizing the EPO (European Patent O¢ ce) database between 1978-2000. We also present the evolution of breadth and depth through time, as well as the breadth and depth dimensions of 40 largest Örms in biotechnology and telecommunications. Our results reveal that the both technology Öelds and Örms are largely scattered in the breadth and depth space. Biotechnology stands out to have the highest breadth and depth

Subject Keywords

Patents, Breadth and depth, Technology fields, Knowledge base

URI

https://hdl.handle.net/11511/93135

Collections

Science and Technology Policy Research Center (TEKPOL), Article

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Citation Formats

M. Özman, “Breadth and Depth of Main Technology Fields: An Empirical Investigation Using Patent Data,” 2007, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/93135.