Average Co-Inventor Count = 2.00
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. Pioneer Electronic Corporation (2 from 2,861 patents)
2. Pioneer Video Corporation (1 from 96 patents)
2 patents:
1. 4766504 - Video disk and recorder with time recorded twice
2. 4683502 - Video disc type recording and reproducing system with interference