Average Co-Inventor Count = 8.00
ph-index = 1
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. Industrial Technology Research Institute (1 from 9,157 patents)
2. National Taiwan University (1 from 1,721 patents)
1 patent:
1. 8503702 - Electret diaphragm and speaker using the same