Average Co-Inventor Count = 4.00
ph-index = 1
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Sumitomo Chemical Company, Limited (1 from 6,896 patents)
2. Tokyo University of Science Foundation (1 from 134 patents)
1 patent:
1. 10468676 - Positive electrode-active substance for sodium secondary cell, positive electrode for sodium secondary cell, and sodium secondary cell