Average Co-Inventor Count = 2.72
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 (11 from 5,450 patents)
11 patents:
1. 9111514 - Delayed registration data readout in electronic music apparatus
2. 8495168 - Service provision system for electronic musical apparatus
3. 8031886 - Audio signal processing system
4. 8031887 - Audio signal processing system
5. 7964780 - Electronic percussion instrument
6. 7848699 - Accessory device, electronic musical instrument and teaching apparatus
7. 7825323 - Electrical music apparatus capable of connecting with external device
8. 7750223 - Musical interaction assisting apparatus
9. 7745713 - Electronic musical instrument with direct print interface
10. 7531737 - Music processing apparatus and management method therefor
11. 6570082 - Tone color selection apparatus and method