Average Co-Inventor Count = 4.00
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 (2 from 96 patents)
2 patents:
1. 5039558 - Optical recording medium and method of manufacturing thereof
2. 4950520 - Optical recording medium and method manufacturing thereof