The Impact of Military Technology Development on Innovation: Evidence from Prewar and Wartime Japanese Secret Patents

Kotani, Atsuki：Kentaro Nakajima：Tetsuji Okazaki：Yukiko U. Saito
25-E-093 RIETI Discussion Paper Series （2025/09/01）

Innovations in military technology potentially drive significant societal transformations through applications to civilian use. This study aims to quantitatively measure the impact of military technology development on civilian innovation activities using prewar and wartime Japanese patent data from 1916 to 1945. By exploiting Japan's …

革新的技術の創出を促進する研究開発拠点の新設に関する考察

吉田公亮：吉岡(小林)徹：牧兼充
『研究 技術 計画』 40巻 2号 228-242頁 （2025/08/31）

研究開発拠点の新設は，イノベーション創出を目指した戦略的行動として多くの企業によって実行されている。これまで，研究開発拠点の立地や複数拠点による研究開発の空間的分業がイノベーションの成果に及ぼす影響に関して，主に企業間での比較が行われてきた。一方で，研究開発拠点の新設はその中で働く研究者のイノベーション活動に影響を及ぼすと推測されるが，…

The role of human interaction in innovation: evidence from the 1918 influenza pandemic in Japan

Inoue, Hiroyasu：Kentaro Nakajima：Tetsuji Okazaki：Yukiko U. Saito
『The Japanese Economic Review』 Vol.76 No.3 pp.795-820 （2025/06/19）

This study empirically investigates human interaction’s role in innovation by exploiting the 1918 influenza pandemic in Japan from 1918 to 1921, which prohibitively incr…

The determinants of parallel invention: Measuring the role of information sharing and personal interaction between inventors

Kang, Byeongwoo:Rudi Bekkers:Atsushi Ohyama
『Research Policy』 Vol. 53 Issue 10 pp. 1-16 （2024/12/01）

There is abundant evidence that individuals create similar ideas independently at about the same time. While this phenomenon has often been documented, its underlying mechanisms have been understudied empirically. This study investigates two of such mechanisms implied by the theoretical work of Amabile (1983, 1988), Nonaka (1994), and …

Language Barriers and the Speed of Knowledge Diffusion

Higham, Kyle: Sadao Nagaoka
22-E-074 RIETI Discussion Paper Series （2022/08/18）

Multilayer patent citation networks: A comprehensive analytical framework for studying explicit technological relationships

Higham, Kyle: Martina Contisciani: Caterina De Bacco
『Technological Forecasting and Social Change』 Vol. 179 （2022/06/01）

The use of patent citation networks as research tools is becoming increasingly commonplace in the field of innovation studies. However, these networks rarely consider the contexts in which these citations are generated and are generally restricted to a single jurisdiction. Here, we propose and explore the use of a multilayer network fr…

知的財産制度はどのように利用されているのか：いくつかの知的財産に関する実証研究とその含意

渡部俊也: 吉岡(小林)徹: 平井祐理:胡韋, 田村善之:山根崇邦（編）『知財のフロンティア2：学際的研究の現在と未来』 123-144頁
勁草書房（2021/10/25）

Patent Quality: Towards a Systematic Framework for Analysis and Measurement

Higham, Kyle:Gaétan de Rassenfosse:Adam B. Jaffe
『Research Policy』 Vol. 50 Issue 4 （2021/05/01）

The quality of novel technological innovations is extremely variable, and the ability to measure innovation quality is essential to sensible, evidence-based policy. Patents, an often vital precursor to a commercialised innovation, share this heterogeneous quality distribution. A pertinent question then arises: How should we define and …

Impact of Academic Patenting on Scientific Publication Quality at the Project Level

Kang, Byeongwoo
『Asian Journal of Technology Innovation』 Vol. 29 Issue 2 pp. 258-282, refereed （2020/07/31）

This paper investigates the relationship between patenting and publishing at the project level. It uses Japan’s Grants-in-Aid for Scientific Research database. Japan’s …