In this study, the characteristics of “papers cited in patents” are examined and impact indicators of them based on existing bibliometric indicators are developed. First, the nature of patent-paper citations is examined for Japanese scientific papers as the basic knowledge for developing indicators. Second, the patent-paper citation index (PPCI) indicator, which was proposed in the previous study, is revised. Third, a set of indicators, named High Feature Valued Patent-Paper Citation Index, which is based on three feature values of citing patents, is proposed. Evidence using our new indicators is presented and the tendency of patent-paper citations of Japanese three sectors such as university, public institute, and corporation is discussed. Finally, issues to be addressed are discussed.
Part of the book: Scientometrics