Average Co-Inventor Count = 3.00
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. Audio-Technica Corporation (2 from 219 patents)
2 patents:
1. D949101 - Battery charger for earphones
2. D938941 - Earphone