Average Co-Inventor Count = 9.00
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. Hitachi Industrial Equipment Systems Co., Ltd. (2 from 494 patents)
2 patents:
1. 7471183 - Transformer
2. 7292127 - Transformer