Energy consumption is an essential issue for all human beings. With the emerging threat of environmental crisis, determining the most efficient and effective way to use the limited energy resources is becoming an urgent issue for the entire world. Hydrogen is one of the most well known energy alternatives. The difficulty of developing hydrogen storage technologies is one of the major factors hindering the widespread utilization of hydrogen energy in daily life. A study on technology development for hydrogen storage would have extraordinary value. The present study implements a deep and comprehensive patent analysis in order to identify the building blocks of hydrogen storage technologies. The scope of this study is limited to the countries most involved in developing hydrogen storage technology: the United States of America, Canada, Japan, and the European Union. By collecting data from major patent databases of each country, this study has accumulated a large amount of resources, which not only improve the comprehensiveness of this study but also help to generate valuable insights. With the results provided by this study, energy researchers can easily identify the most likely technology trajectory and improve the quality and usability of their research results.
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