Average Co-Inventor Count = 8.00
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 42,508 patents)
2. Nippon Telegraph and Telephone Corporation (1 from 5,290 patents)
3. Hitachi Service Engineering Co., Ltd. (1 from 6 patents)
1 patent:
1. 5177448 - Synchrotron radiation source with beam stabilizers