Average Co-Inventor Count = 1.62
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. Yamaha Corporation (15 from 5,452 patents)
15 patents:
1. 12114120 - Earphone housing and earphone
2. D1026868 - Earphone
3. 11804202 - Electronic wind instrument
4. D990550 - Electronic wind instrument
5. D952733 - Electronic wind instrument
6. 10504502 - Sound control device, sound control method, and sound control program
7. 10354629 - Sound control device, sound control method, and sound control program
8. 10192533 - Controller and system for voice generation based on characters
9. D837282 - Electronic keyboard
10. 10156973 - Score displaying method and storage medium
11. 9940914 - Score displaying method and storage medium
12. D764571 - Electronic keyboard
13. D761348 - Electronic keyboard
14. D696714 - Electronic keyboard
15. D696715 - Electronic keyboard