Average Co-Inventor Count = 2.40
ph-index = 4
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)
2. Pioneer Kabushiki Kaisha (1 from 75 patents)
4 patents:
1. D290111 - Disc player
2. D272151 - Audio tuner
3. D271694 - Audio amplifier
4. D266508 - Tuner