# Technological trajectory in fuel cell technologies: A patent-based main path analysis

> Research article (International Journal of Hydrogen Energy, 2023) · cited 14× · AI/ML

**Wikidata**: [openalex:W4388450123](https://www.wikidata.org/wiki/openalex:W4388450123)  
**Source**: https://4ort.xyz/entity/technological-trajectory-in-fuel-cell-technologies-a-patent-based-main-path-analysis