Average Co-Inventor Count = 2.77
ph-index = 3
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. Tokyo Shibaura Denki Kabushiki Kaisha (3 from 2,916 patents)
3 patents:
1. 4654649 - Display device
2. 4422008 - Electron tube having a photoelectric screen
3. 4331898 - Image intensifier with two-layer input window