Average Co-Inventor Count = 1.82
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 (8 from 5,452 patents)
2. Jtekt Corporation (1 from 2,421 patents)
9 patents:
1. 11325636 - Steering column device
2. RE47779 - Simple electronic musical instrument, player's console and signal processing system incorporated therein
3. 7926351 - Pressure sensor and data input apparatus
4. 6753467 - Simple electronic musical instrument, player's console and signal processing system incorporated therein
5. 6031176 - Electronic percussion instrument with tone color controlling system
6. 6002080 - Electronic wind instrument capable of diversified performance expression
7. 5929361 - Woodwind-styled electronic musical instrument with bite indicator
8. 5113744 - Automatic performance apparatus having plural memory areas
9. 4909116 - Electronic musical instrument generating background musical tone