Average Co-Inventor Count = 4.00
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. Tokin Corporation (2 from 149 patents)
2 patents:
1. 5998909 - Piezoelectric transformer
2. 5847490 - Piezoelectric transformer wrapped by wrapping member of soft insulating