Average Co-Inventor Count = 3.60
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. Yamaha Corporation (4 from 5,452 patents)
2. Fujitsu Corporation (2 from 39,244 patents)
4 patents:
1. 11693621 - Sound reproduction system and sound quality control method
2. 11200879 - Sound control device, wearable sound device and control method
3. 10820132 - Voice providing device and voice providing method
4. 10805710 - Acoustic device and acoustic processing method