A note on growth of superconductivity patents with two new indicators

Patent statistics may be indicative of growth and evolution of technologies in relation to a scientific field or sub-field of research. In this paper annual growth of patents in the field of superconductivity has been studied. The data in five-yearly cumulation have been set against research papers on superconductivity to show comparative growth of basic research and technological development. Two simple indicators have been devised to understand the apparent influence of basic research on technology and trends of relative growth.

[1]  A. Kayal,et al.  Using a new patent based technology indicator to measure the pace of technological progress for superconductor and semiconductor technologies , 1997, Innovation in Technology Management. The Key to Global Leadership. PICMET '97.

[2]  J. H. Wernick,et al.  Superconductivity in Nb 3 Sn at High Current Density in a Magnetic Field of 88 kgauss , 1961 .

[3]  K. Müller,et al.  Possible highTc superconductivity in the Ba−La−Cu−O system , 1986 .

[4]  I. Giaever,et al.  Energy gap in superconductors measured by electron tunneling. [Al-AlO-Pb] , 1960 .

[5]  A. A. Kayal,et al.  An empirical evaluation of the technology cycle time indicator as a measure of the pace of technological progress in superconductor technology , 1999 .

[6]  K. Faust Early identification of technological advances on the basis of patent data , 2005, Scientometrics.

[7]  F. Narin,et al.  Direct validation of citation counts as indicators of industrially important patents , 1991 .

[8]  K. Mendelssohn Production of High Magnetic Fields at Low Temperatures , 1933, Nature.

[9]  Francis Narin,et al.  Technological performance assessments based on patents and patent citations , 1984, IEEE Transactions on Engineering Management.

[10]  Chu,et al.  Superconductivity at 93 K in a new mixed-phase Yb-Ba-Cu-O compound system at ambient pressure. , 1987, Physical review letters.

[11]  B. Josephson Possible new effects in superconductive tunnelling , 1962 .

[12]  Timothy R. Anderson,et al.  Innovation in technology management : the key to global leadership , 1997 .

[13]  Mark P. Carpenter,et al.  Linkage Between Basic Research Literature and Patents , 1980 .

[14]  Z. Griliches Patent Statistics as Economic Indicators: a Survey , 1990 .