Working Paper: NBER ID: w27011
Authors: Matthew S. Clancy; Paul Heisey; Yongjie Ji; Giancarlo Moschini
Abstract: This chapter investigates the extent to which agricultural innovations draw on ideas originating outside of agriculture. We identify a large set of US patents for agricultural technologies granted between 1976 and 2018. To measure knowledge spillovers to these patents, we rely on three proxies: patent citations to other patents, patent citations to the scientific literature, and a novel text analysis to identify and track new ideas in the patent text. We find that more than half of knowledge flows originate outside of agriculture. The majority of these knowledge inflows, however, still originate in domains that are close to agriculture.
Keywords: No keywords provided
JEL Codes: O31; O34; Q16
Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.
| Cause | Effect |
|---|---|
| Knowledge spillovers from outside agriculture (O36) | Agricultural research and development (R&D) (Q16) |
| Non-agricultural knowledge (Q19) | Agricultural innovation (Q16) |
| Patents from firms with agricultural patents (Q16) | Agricultural patents citing these patents (Q16) |
| Text analysis (C89) | Capturing knowledge flows (O36) |