Average Co-Inventor Count = 2.71
ph-index = 3
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. Mccarthy Music Corp. (4 from 4 patents)
4 patents:
1. 9836992 - Interactive piano training system
2. 9092994 - Interactive piano training system
3. 9082313 - Interactive piano training system
4. 8901405 - Electronic piano training device