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 (3 from 216 patents)
3 patents:
1. D1029800 - Earphone
2. D1028876 - Battery charger for earphones
3. D1002585 - Earphone