Average Co-Inventor Count = 3.43
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. Tdk Corporation (2 from 7,968 patents)
2 patents:
1. 9825295 - Positive electrode active material and lithium-ion secondary battery
2. 9631264 - Soft magnetic powder core