Average Co-Inventor Count = 1.76
ph-index = 4
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 (5 from 5,451 patents)
5 patents:
1. 7358433 - Automatic accompaniment apparatus and a storage device storing a program for operating the same
2. 6852918 - Automatic accompaniment apparatus and a storage device storing a program for operating the same
3. 6576826 - Tone generation apparatus and method for simulating tone effect imparted by damper pedal
4. 5446237 - Electronic musical instrument having a control section memory for
5. 5317947 - Musical tone generator with a multiple parameter write operation