Average Co-Inventor Count = 2.40
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. Pioneer Electronic Corporation (3 from 2,861 patents)
3 patents:
1. 5107474 - Multi-magazine disc player
2. 5084859 - Multi-magazine disc player
3. 5034935 - Multi-magazine disc player