%0 Journal Article %1 Jaffe1993 %A Jaffe, Adam B. %A Trajtenberg, Manuel %A Henderson, Rebecca %D 1993 %J The Quarterly Journal of Economics %K - Bibliothek Bibliothek,Folder Folder Meine bands diss master{\_}thesis,technology social-science-related-work %N 3 %P 577--598 %R 10.2307/2118401 %T Geographic localization of knowledge spillovers as evidenced by patent citations %V 108 %X We compare the geographic location of patent citations with that of the cited patents, as evidence of the extent to which knowledge spillovers are geographically localized. We find that citations to domestic patents are more likely to be domestic, and more likely to come from the same state and SMSA as the cited patents, compared with a “control frequency” reflecting the pre-existing concentration of related research activity. These effects are particularly significant at the local (SMSA) level. Localization fades over time, but only very slowly. There is no evidence that more “basic” inventions diffuse more rapidly than others. %Z Finally, Table I shows that 55 to 60 percent of citations have a primary patent class that is the same as the primary patent class of the originating patent, indicating that the originating and citing patents are technologically close to one another.

@article{Jaffe1993, abstract = {We compare the geographic location of patent citations with that of the cited patents, as evidence of the extent to which knowledge spillovers are geographically localized. We find that citations to domestic patents are more likely to be domestic, and more likely to come from the same state and SMSA as the cited patents, compared with a “control frequency” reflecting the pre-existing concentration of related research activity. These effects are particularly significant at the local (SMSA) level. Localization fades over time, but only very slowly. There is no evidence that more “basic” inventions diffuse more rapidly than others.}, added-at = {2024-03-15T09:47:57.000+0100}, annote = {Finally, Table I shows that 55 to 60 percent of citations have a primary patent class that is the same as the primary patent class of the originating patent, indicating that the originating and citing patents are technologically close to one another.}, author = {Jaffe, Adam B. and Trajtenberg, Manuel and Henderson, Rebecca}, biburl = {https://www.bibsonomy.org/bibtex/250d8a2f96dd108167166dbc73a15a93c/tobias.koopmann}, doi = {10.2307/2118401}, file = {:C$\backslash$:/Users/heinisch/Documents/Mendeley Desktop/Jaffe et al. - 1993 - Geographic Localization of Knowledge Spillovers as.pdf:pdf;::}, interhash = {efc3b54f21d83795bc7404d8920bdfdd}, intrahash = {50d8a2f96dd108167166dbc73a15a93c}, issn = {0033-5533, 1531-4650}, journal = {The Quarterly Journal of Economics}, keywords = {- Bibliothek Bibliothek,Folder Folder Meine bands diss master{\_}thesis,technology social-science-related-work}, language = {en}, mendeley-groups = {thesis,lecture{\_}innovation{\&}knowledge,strangers,Zotero - My Library}, mendeley-tags = {Folder - Meine Bibliothek,Folder - Meine Bibliothek - master{\_}thesis,technology bands}, month = aug, number = 3, pages = {577--598}, timestamp = {2024-03-15T09:47:57.000+0100}, title = {{Geographic localization of knowledge spillovers as evidenced by patent citations}}, volume = 108, year = 1993 }