# Novel data structure and visualization tool for studying technology evolution based on patent information: The DTFootprint and the TechSpectrogram

> Research article (World Patent Information, 2020) · cited 10× · AI/ML

**Wikidata**: [openalex:W3112024462](https://www.wikidata.org/wiki/openalex:W3112024462)  
**Source**: https://4ort.xyz/entity/novel-data-structure-and-visualization-tool-for-studying-technology-evolution-based-on-patent-information-the-dtfootprin