Average Co-Inventor Count = 3.68
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 (11 from 5,452 patents)
11 patents:
1. 7977559 - Tone generation system controlling the music system
2. 7847174 - Tone generation system controlling the music system
3. 7592531 - Tone generation system
4. 7514624 - Portable telephony apparatus with music tone generator
5. 7161081 - Portable telephony apparatus with music tone generator
6. 7119268 - Portable telephony apparatus with music tone generator
7. 7041893 - Electronic musical instrument with customization of auxiliary capability
8. 6967276 - Portable telephony apparatus with music tone generator
9. 6911592 - Portable telephony apparatus with music tone generator
10. 6835884 - System, method, and storage media storing a computer program for assisting in composing music with musical template data
11. 6429365 - Performance control apparatus and method capable of shifting performance style during performance