Average Co-Inventor Count = 1.86
ph-index = 6
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 (9 from 5,450 patents)
2. Other (2 from 832,718 patents)
9 patents:
1. 8008565 - Performance apparatus and tone generation method
2. 7709724 - Performance apparatus and tone generation method
3. 7536257 - Performance apparatus and performance apparatus control program
4. 7394010 - Performance apparatus and tone generation method therefor
5. 7371957 - Performance apparatus and tone generation method therefor
6. 7342164 - Performance apparatus and tone generation method using the performance apparatus
7. D563458 - Electronic musical instrument
8. D563459 - Electronic musical instrument
9. 6953887 - Session apparatus, control method therefor, and program for implementing the control method