Average Co-Inventor Count = 1.50
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. Hoshino Gakki Co., Ltd. (3 from 153 patents)
3 patents:
1. 11295710 - Bass drum pad and drum kit
2. 11222617 - Snare drum practice pad
3. 8927842 - Drum system