Average Co-Inventor Count = 5.39
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. Hitachi, Ltd. (4 from 42,508 patents)
4 patents:
1. D297010 - Television receiver
2. D291572 - Television receiver
3. D289161 - Television receiver
4. D285791 - Television receiver