Average Co-Inventor Count = 3.43
ph-index = 18
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. Nippon Gakki Seizo Kabushiki Kaisha (45 from 841 patents)
2. Yamaha Corporation (14 from 5,450 patents)
3. Nippon Soda Co., Ltd. (5 from 516 patents)
64 patents:
1. 6486387 - Fingering information analyzer, electronic musical instrument including fingering information analysis and method therefore
2. 6025551 - Fingering information analyzer and electronic musical instrument with
3. 5714706 - Method and apparatus for controlling musical sounds by player's foot
4. 5656789 - Electronic musical instrument having a function to indicate keys to be
5. 5641930 - Electronic musical apparatus for controlling musical tone using initial
6. 5552561 - Playing-style detecting apparatus and electronic musical instrument
7. 5306443 - Method for the preparation of conductive polymer film
8. 5290964 - Musical tone control apparatus using a detector
9. 5177311 - Musical tone control apparatus
10. 5147969 - Musical tone control apparatus
11. 5144875 - Music sheet
12. 5127301 - Wear for controlling a musical tone
13. 5125313 - Musical tone control apparatus
14. 5081896 - Musical tone generating apparatus
15. 5005460 - Musical tone control apparatus