Average Co-Inventor Count = 2.76
ph-index = 7
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. 8222508 - Tone signal creating apparatus and method
2. 7531737 - Music processing apparatus and management method therefor
3. 7514624 - Portable telephony apparatus with music tone generator
4. 7161081 - Portable telephony apparatus with music tone generator
5. 7119268 - Portable telephony apparatus with music tone generator
6. 7091410 - Apparatus and computer program for providing arpeggio patterns
7. 6967276 - Portable telephony apparatus with music tone generator
8. 6911592 - Portable telephony apparatus with music tone generator
9. RE38554 - Method of extending capability of music apparatus by networking
10. 6429365 - Performance control apparatus and method capable of shifting performance style during performance
11. 5892171 - Method of extending capability of music apparatus by networking