Average Co-Inventor Count = 1.33
ph-index = 8
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 (12 from 5,450 patents)
2. Nippon Gakki Seizo Kabushiki Kaisha (3 from 841 patents)
15 patents:
1. 7268287 - Music data providing apparatus, music data reception apparatus and program
2. 7202407 - Tone material editing apparatus and tone material editing program
3. 5576506 - Device for editing automatic performance data in response to inputted
4. 5403966 - Electronic musical instrument with tone generation control
5. 5281756 - Electronic musical instrument capable of assigning desired tones to a
6. 5270477 - Automatic performance device
7. 5220121 - Melody supplement control apparatus
8. 5189240 - Breath controller for musical instruments
9. 5170003 - Electronic musical instrument for simulating a wind instrument
10. 5125315 - Electronic musical instrument with selection of standard sound pitch of
11. 4991484 - Tone signal generation device having a sampling function
12. 4947723 - Tone signal generation device having a tone sampling function
13. 4733591 - Electronic musical instrument
14. 4553465 - Electronic musical instrument producing bass and chord tones utilizing
15. 4543869 - Electronic musical instrument producing chord tones utilizing channel