Average Co-Inventor Count = 6.32
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 patents:
1. 5848173 - Surroundless loudspeaker
2. 5719946 - Loudspeaker for higher audio frequencies and a manufacturing method