Average Co-Inventor Count = 4.13
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. Gotoh Gut Co., Ltd. (3 from 13 patents)
2. Gunma Prefecture (3 from 6 patents)
3 patents:
1. 11948544 - Musical instrument tuner, musical performance support device and musical instrument management device
2. 11094298 - Capo
3. 10971120 - Strap pin fitting