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. Hitachi, Ltd. (1 from 42,485 patents)
2. Hitachi Kokusai Yagi Solutions Inc. (1 from 1 patent)
1 patent:
1. D723701 - Light shielding sheet of a biological optical measuring instrument