Average Co-Inventor Count = 1.09
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 (27 from 5,456 patents)
27 patents:
1. 11763785 - Pedal apparatus for percussion instrument
2. 11670265 - Stand for musical instrument, and high-hat stand
3. 10529306 - Pedal apparatus for percussion instrument
4. 10360881 - Foot pedal apparatus for drum
5. D821089 - Musical instrument carrier
6. 9875731 - Musical instrument carrier
7. 9691367 - Drum foot pedal apparatus
8. 9685146 - Drum beater and drum foot pedal apparatus
9. 8084676 - Distal structure of leg for musical instrument stand
10. 7880075 - Angle adjusting structure for high-hat cymbals
11. 7875783 - Spring holding mechanism for foot pedal of bass drum
12. 7381877 - Foot pedal for drum
13. 6951976 - High hat stand promptly responsive to player's footing
14. 6930232 - High-hat stand
15. 6900380 - Foot pedal for drum