Average Co-Inventor Count = 4.50
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 Corporation (1 from 2,646 patents)
3 patents:
1. 6680890 - Information recording apparatus
2. 6553177 - Information recording and reproducing system
3. 6507541 - Information recording apparatus