Author: M. Kunz 1
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  • 1 Research Institute of Macromolecular Chemistry Chemopetrol Brno (Czechoslovakia) Brno (Czechoslovakia)
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Abstract  

Abandonement rates of patents in five European countries are studied. The time distribution of British patents can be described by a truncated Gauss' distribution, of Belgian patents by a Poisson's distribution. Appropriate models derived on the base of the octogonal and cubical linear vector space norms are discussed.