Average Co-Inventor Count = 7.20
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. Fujitsu Corporation (2 from 39,245 patents)
2. Yamaha Corporation (2 from 5,452 patents)
2 patents:
1. 10820132 - Voice providing device and voice providing method
2. 10805710 - Acoustic device and acoustic processing method