Quality of Patenting in the UK Scientific Instruments Industry: Database Construction
This paper explains how a database of patent quality in the UK scientific instruments industry was constructed for the period 1981-90. A new and detailed decomposition of total patenting activity for the decade is reported upon for over ninety firms in the industry for this decade. This involves constructing patent families by exhaustively tracing all patent activity for the same invention over all patent regimes. The database is analysed in four ways: (i) differences between patenting and non-patenting firms; (ii) concentration and demand fragmentation; (iii) patenting and financial performance in 1986-87; (iv) optimal patenting firm size.
|Date of creation:||Oct 1994|
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- Zvi Griliches, 1990.
"Patent Statistics as Economic Indicators: A Survey,"
NBER Working Papers
3301, National Bureau of Economic Research, Inc.
- Griliches, Zvi, 1990. "Patent Statistics as Economic Indicators: A Survey," Journal of Economic Literature, American Economic Association, vol. 28(4), pages 1661-1707, December.
- Zvi Griliches, 1998. "Patent Statistics as Economic Indicators: A Survey," NBER Chapters, in: R&D and Productivity: The Econometric Evidence, pages 287-343 National Bureau of Economic Research, Inc.
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- Bosworth, Derek L, 1973. "Changes in the Quality of Inventive Output and Patent Based Indices of Technological Change," Bulletin of Economic Research, Wiley Blackwell, vol. 25(2), pages 95-103, November.
- Acs, Zoltan J & Audretsch, David B, 1988. "Innovation in Large and Small Firms: An Empirical Analysis," American Economic Review, American Economic Association, vol. 78(4), pages 678-90, September.
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