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. Hitachi, Ltd. (2 from 42,496 patents)
2 patents:
1. 11797402 - Storage system and control method
2. 11537712 - Security system, storage medium storing computer program, and data diagnostic method