Average Co-Inventor Count = 1.32
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 (6 from 5,450 patents)
6 patents:
1. 11790879 - Impact detection device and percussion instrument
2. 11244661 - Sound damping device and vibration detection device
3. 10620020 - Sensor unit that detects a strike
4. 10354630 - Performance information processing device and method
5. 9858905 - Mounting device for cymbal type percussion instrument
6. 9601095 - Percussion surface apparatus