Average Co-Inventor Count = 8.00
ph-index = 2
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. Nippon Hoso' Kyokai (2 from 374 patents)
2. Hamamatsu Photonics Kabushiki Kaisha (2 from 134 patents)
2 patents:
1. 4980772 - Image pickup device incorporated with image intensifier tube
2. 4974090 - Image pickup device incorporated with image intensifier tube