Average Co-Inventor Count = 2.19
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 (3 from 5,451 patents)
3 patents:
1. 11985489 - Sound processing method, terminal, and sound system
2. 11877107 - Microphone device
3. 9695610 - Speaker cover