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 Kiden Kogyo Kabushiki Kaisha (1 from 9 patents)
2. Yagiantena Kabushiki Kaisha (1 from 2 patents)
1 patent:
1. 4570060 - Follow-up guidance and information transfer system for a moving object