Average Co-Inventor Count = 2.00
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. (5 from 153 patents)
5 patents:
1. D314969 - Drum spur holder
2. D312474 - Drum holder
3. D311202 - Clamp for drum
4. D311201 - Drum holder clamp
5. D311200 - Drum holder mount