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Citation frequency and the value of patented innovation
Harhoff, Dietmar; Narin, Francis; Scherer, Frederic M.; … - 1997
Through a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A search of subsequent U.S. and German patents yielded a count of citations to those patents....
Persistent link: https://www.econbiz.de/10011417779
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Human capital and innovation in East and West German manufacturing firms
Pfeiffer, Friedhelm - 1997
The paper analyses the theoretical and empirical relationship between employment, skill structure and innovation in … East and West German manufacturing firms. The econometric part builds on firm data from the Mannheim Innovation Panel 1993 …
Persistent link: https://www.econbiz.de/10013428095
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Qualifikation, Beschäftigung und technischer Fortschritt
Blechinger, Doris; Pfeiffer, Friedhelm - 1997
Persistent link: https://www.econbiz.de/10013428098
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Qualifikation, Beschäftigung und technischer Fortschritt : weitere empirische Evidenz mit den Daten des Mannheimer Innovationspanels
Blechinger, Doris; Pfeiffer, Friedhelm - 1998
Persistent link: https://www.econbiz.de/10013428139
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Citation frequency and the value of patented innovation
Harhoff, Dietmar (contributor) - 1997
Through a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A search of subsequent U.S. and German patents yielded a count of citations to those patents....
Persistent link: https://www.econbiz.de/10013428229